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Grand Portoro Marble & Serpentine Marble Fireplace Mantel
Grand Portoro Marble & Serpentine Marble Fireplace Mantel

Grand Portoro Marble & Serpentine Marble Fireplace Mantel

Located in London, GB

with crisplycarved Cornish serpentine dentils. Under this, the central keystone, ionic capitals and

Category

1860s British High Victorian Antique Keystone

Materials

Marble

Antique Reclaimed Neo-Gothic Carved Tan Marble Mantel
Antique Reclaimed Neo-Gothic Carved Tan Marble Mantel

Antique Reclaimed Neo-Gothic Carved Tan Marble Mantel

Located in New York, NY

delicate foliate carvings and topped with a sculpted keystone—perhaps a leafy boss or subtle grotesque

Category

Early 20th Century Gothic Antique Keystone

Materials

Marble

Antique French Rouge Royal Marble Mantel
Antique French Rouge Royal Marble Mantel

Antique French Rouge Royal Marble Mantel

Located in Dallas, TX

decorative motif adorning the central keystone and intricate detailing on both legs, embodying timeless

Category

18th Century Antique Keystone

Materials

Marble

Antique French White Veined Carrara Marble Mantel
Antique French White Veined Carrara Marble Mantel

Antique French White Veined Carrara Marble Mantel

Located in Dallas, TX

adorning the central keystone, complemented by intricate scrollwork carvings that extend gracefully along

Category

18th Century Antique Keystone

Materials

Carrara Marble

French Fleur de Pêcher Marble Mantel
French Fleur de Pêcher Marble Mantel

French Fleur de Pêcher Marble Mantel

Located in Dallas, TX

a meticulously hand-carved floral motif adorning the keystone, while its elegant legs feature

Category

Mid-18th Century Antique Keystone

Materials

Marble

Antique French White Veined Carrara Marble Mantel
Antique French White Veined Carrara Marble Mantel

Antique French White Veined Carrara Marble Mantel

Located in Dallas, TX

hand-carved in France. The centerpiece features triangular geometric carvings on the keystone, while

Category

18th Century Antique Keystone

Materials

Carrara Marble

Howard 14Kt Solid Gold Open Faced Pocket Watch 1925 Flawless Enamel Dial
Howard 14Kt Solid Gold Open Faced Pocket Watch 1925 Flawless Enamel Dial

Howard 14Kt Solid Gold Open Faced Pocket Watch 1925 Flawless Enamel Dial

By Howard

Located in Long Beach, CA

Company was acquired by the Keystone Watch Case Company. Keystone continued to produce Howard watches

Category

1920s American Art Deco Antique Keystone

Materials

Gold

An antique Victorian period fireplace made from Portoro Nero marble
An antique Victorian period fireplace made from Portoro Nero marble

An antique Victorian period fireplace made from Portoro Nero marble

Located in Tyrone, Northern Ireland

Portoro Nero marble The arched panels with raised and fielded panels are centred by a keystone, a

Category

Late 19th Century English Victorian Antique Keystone

Materials

Marble

George II Clipsham Stone Fire Surround
George II Clipsham Stone Fire Surround

George II Clipsham Stone Fire Surround

Located in London, GB

fluted Keystone on stop-fluted jambs, on block feet. Measures: Opening width 79.5cm x 103.5cm high.

Category

Mid-18th Century European George II Antique Keystone

Materials

Limestone

Grand Victorian Black Marble Fireplace
Grand Victorian Black Marble Fireplace

Grand Victorian Black Marble Fireplace

Located in London, GB

moulded shelf sits over a verde antico undershelf, and is centred by a beautifully carved keystone above

Category

Late 19th Century English High Victorian Antique Keystone

Materials

Belgian Black Marble

14k Gold Royal Arch Masonic Pendant With Enamel
14k Gold Royal Arch Masonic Pendant With Enamel

14k Gold Royal Arch Masonic Pendant With Enamel

Located in Venice, CA

14k Gold Royal Arch Masonic Pendant With Enamel, circa 1910 This 14k gold keystone shaped pendant

Category

Early 20th Century American Edwardian Antique Keystone

Materials

Gold, 14k Gold, Enamel, Yellow Gold

Georgian Fancy Double Hand Mirror in Mahogany and Holly England 1820s
Georgian Fancy Double Hand Mirror in Mahogany and Holly England 1820s

Georgian Fancy Double Hand Mirror in Mahogany and Holly England 1820s

Located in Hudson, NY

damaged, but not replace. It is handsomely made of expensive materials and has an interesting keystone

Category

1820s English Georgian Antique Keystone

Materials

Abalone, Mahogany, Holly

18th Century George II Limestone Fireplace Mantel
18th Century George II Limestone Fireplace Mantel

18th Century George II Limestone Fireplace Mantel

Located in Haarlem, Noord-Holland

frieze centred by a moulded keystone with graduated flutes, flanked by raised panels, supported by

Category

Early 18th Century European Georgian Antique Keystone

Materials

Limestone

Magnolia Blossom

Magnolia Blossom

By Imogen Cunningham

Located in New York, NY

keystone of modernist photography. In the 1920s, Cunningham was living in Oakland and was largely confined

Category

1920s Antique Keystone

Materials

Silver Gelatin

Two Callas

Two Callas

By Imogen Cunningham

Located in New York, NY

keystone of modernist photography. In the 1920s, Cunningham was living in Oakland and was largely confined

Category

1920s Antique Keystone

Materials

Silver Gelatin

Georgian Palladian Corner Cupboard
Georgian Palladian Corner Cupboard

Georgian Palladian Corner Cupboard

Located in Greenwich, CT

keystone arch over two panel door flanked by fluted pilasters, the interior with lovely scalloped shelves

Category

Mid-18th Century English Folk Art Antique Keystone

Materials

Pine

George II Irish Baroque Marble Chimneypiece
George II Irish Baroque Marble Chimneypiece

George II Irish Baroque Marble Chimneypiece

Located in Tyrone, Northern Ireland

. The keystone carved with an oyster shell and the corners with stylized rosettes. This fireplace

Category

Early 18th Century Irish Baroque Antique Keystone

Materials

Marble

Antique Limestone Lion Crest or Plaque
Antique Limestone Lion Crest or Plaque

Antique Limestone Lion Crest or Plaque

Located in Wormelow, Herefordshire

a keystone above an entranceway or a family crest wall decoration in the prestigious courtyard of a

Category

Mid-19th Century English Georgian Antique Keystone

Materials

Stone, Limestone

Antique French Turquin Blue and Violet Brocatelle Marble Mantel
Antique French Turquin Blue and Violet Brocatelle Marble Mantel

Antique French Turquin Blue and Violet Brocatelle Marble Mantel

Located in Dallas, TX

intricately hand-carved keystone, exemplifying the refined artistry of the era. Functional air vents

Category

18th Century French Antique Keystone

Materials

Marble

Antique White Statuary Marble Victorian Arched Fireplace Mantel
Antique White Statuary Marble Victorian Arched Fireplace Mantel

Antique White Statuary Marble Victorian Arched Fireplace Mantel

Located in London, GB

guilloche motif inset in the panels, either side of a scrolled keystone over a rope-twist carved arch

Category

Mid-19th Century English Victorian Antique Keystone

Materials

Statuary Marble

19th Century Black Marble Fireplace, circa 1860
19th Century Black Marble Fireplace, circa 1860

19th Century Black Marble Fireplace, circa 1860

Located in Tyrone, Northern Ireland

finely carved with arabesques, this rests above a framed opening featuring a dogs head keystone and

Category

19th Century English Baroque Revival Antique Keystone

Materials

Belgian Black Marble

Antique Italian White Marble Victorian Arched Fireplace Mantel
Antique Italian White Marble Victorian Arched Fireplace Mantel

Antique Italian White Marble Victorian Arched Fireplace Mantel

Located in London, GB

guilloche motif inset in the panels, either side of a scrolled keystone over a rope-twist carved arch

Category

Mid-19th Century English Victorian Antique Keystone

Materials

Marble

Antique Irish Marble Fireplace
Antique Irish Marble Fireplace

Antique Irish Marble Fireplace

Located in Tyrone, Northern Ireland

the arches are carved with acanthus leaf decoration and in the centre a floral keystone.

Category

Mid-19th Century Irish Early Victorian Antique Keystone

Materials

Statuary Marble

Characterful study of the artist's cat
Characterful study of the artist's cat

Characterful study of the artist's cat

By Philip Wilson Steer

Located in Harkstead, GB

A really super image of a beautiful pussy cat by one of the keystones of the British Modern Art

Category

Early 20th Century Impressionist Antique Keystone

Materials

Paper, Pencil

Very Rare French Boulle Marquetry Inlay Cheval Mirror
Very Rare French Boulle Marquetry Inlay Cheval Mirror

Very Rare French Boulle Marquetry Inlay Cheval Mirror

By André-Charles Boulle

Located in London, GB

design, surmounted by a gilt bronze rococo keystone finial with a central female mask, the hinges

Category

19th Century French Louis XIV Antique Keystone

Materials

Brass, Ormolu

Antique French Balacet Marble Mantel
Antique French Balacet Marble Mantel

Antique French Balacet Marble Mantel

Located in Dallas, TX

motif on the keystone, adding a striking focal point. Both mantel legs begin with a geometric square

Category

19th Century French French Provincial Antique Keystone

Materials

Marble

Howard Stainless Steel Art Deco Exhibition Back Watch, circa 1920's
Howard Stainless Steel Art Deco Exhibition Back Watch, circa 1920's

Howard Stainless Steel Art Deco Exhibition Back Watch, circa 1920's

By Howard

Located in Long Beach, CA

they were rugged and dependable. In 1903, the Howard Watch Company was acquired by the Keystone Watch

Category

1920s American Art Deco Antique Keystone

Gothic Revival Carved Oak Fireplace
Gothic Revival Carved Oak Fireplace

Gothic Revival Carved Oak Fireplace

Located in London, GB

undercarved with foliate detail beneath which is a castellated border centred by a keystone with a plain

Category

Mid-19th Century English Gothic Revival Antique Keystone

Materials

Oak

Howard 14 Karat Solid White Gold Opened Faced Pocket Watch, circa 1920s
Howard 14 Karat Solid White Gold Opened Faced Pocket Watch, circa 1920s

Howard 14 Karat Solid White Gold Opened Faced Pocket Watch, circa 1920s

By E. Howard & Co.

Located in Long Beach, CA

Howard Watch Company was acquired by the Keystone Watch Case Company. Keystone continued to produce

Category

Early 20th Century American Art Deco Antique Keystone

Materials

White Gold

Howard Steel Oversized Wrist Watch Manual Winding from 1921
Howard Steel Oversized Wrist Watch Manual Winding from 1921

Howard Steel Oversized Wrist Watch Manual Winding from 1921

By Howard & Co., New York

Located in Long Beach, CA

dependable. In 1903, the Howard Watch Company was acquired by the Keystone Watch Case Company. Keystone

Category

1920s American Art Deco Antique Keystone

Materials

Steel

Howard Stainless Steel Art Deco Exhibition Back Watch, circa 1920's
Howard Stainless Steel Art Deco Exhibition Back Watch, circa 1920's

Howard Stainless Steel Art Deco Exhibition Back Watch, circa 1920's

By Howard

Located in Long Beach, CA

dependable. In 1903, the Howard Watch Company was acquired by the Keystone Watch Case Company. Keystone

Category

1920s American Art Deco Antique Keystone

Hamilton Watch Company of Lancaster, PA, circa 1915
Hamilton Watch Company of Lancaster, PA, circa 1915

Hamilton Watch Company of Lancaster, PA, circa 1915

By Hamilton

Located in Los Angeles, CA

Keystone and is in good condition with a small scratch and a few small dimples on the rear cover. The

Category

Early 20th Century American Edwardian Antique Keystone

Materials

Gold-filled

Antique French Carved Oak Vitrine Cabinet Bookcase Barley Twist Renaissance
Antique French Carved Oak Vitrine Cabinet Bookcase Barley Twist Renaissance

Antique French Carved Oak Vitrine Cabinet Bookcase Barley Twist Renaissance

Located in Miami, FL

features a dimensional carved mask amid carved foliate scrolls, with carved keystone corners on either side

Category

Late 19th Century French Baroque Antique Keystone

Materials

Bronze

19th Century Victorian Fireplace in Grey Saint Anne des Pyrenees Marble
19th Century Victorian Fireplace in Grey Saint Anne des Pyrenees Marble

19th Century Victorian Fireplace in Grey Saint Anne des Pyrenees Marble

Located in Edinburgh, GB

keystone adornment, the whole resting on moulded foot blocks. This is a beautiful fireplace surround

Category

1880s British Victorian Antique Keystone

Materials

Marble

Panel with a Mascaron

Panel with a Mascaron

By Hans Sebald Beham

Located in New York, NY

. A mascaron is a grotesque head or face, used to adorn keystones and other prominent architectural

Category

16th Century Old Masters Antique Keystone

Materials

Engraving

Large 19th Century Arched Verde Antico Marble Fireplace Surround
Large 19th Century Arched Verde Antico Marble Fireplace Surround

Large 19th Century Arched Verde Antico Marble Fireplace Surround

Located in Edinburgh, GB

by a raised scalloped fluted keystone, and flanked by a pair of large spandrels each carved with

Category

1890s Scottish Victorian Antique Keystone

Materials

Marble

Isadora Duncan
Isadora Duncan

Isadora Duncan

By Abraham Walkowitz

Located in Fairlawn, OH

until it closed in 1917, and as an active participant in the keystone Armory Show of 1913, Walkowitz

Category

1910s American Modern Antique Keystone

Materials

Graphite

Large-Scale Keystone Ride-On Toy Fire Truck
Large-Scale Keystone Ride-On Toy Fire Truck

Large-Scale Keystone Ride-On Toy Fire Truck

By Keystone Manufacturing Company

Located in Fulton, CA

Impressive, large scale "Ride-Em" pressed steel toy fire engine ladder truck by Keystone

Category

Early 20th Century American Antique Keystone

Materials

Steel

Carved Limestone Keystone
Carved Limestone Keystone

Carved Limestone Keystone

Located in New York, NY

Third quarter 19th century limestone keystone having decoratively carved crossed foliate S scroll

Category

Late 19th Century American Antique Keystone

Materials

Limestone

Carved Limestone Keystone
Carved Limestone Keystone

Carved Limestone Keystone

Located in New York, NY

Third quarter 19th century carved limestone keystone having a decorative bound foliate motif

Category

Late 19th Century American Antique Keystone

Materials

Limestone

Dated Red Sandstone Keystone
Dated Red Sandstone Keystone

Dated Red Sandstone Keystone

Located in Grange-Over-Sands, GB

A rare 1825 dated keystone, with the initials M I M. Carved from red lazonby sandstone.

Category

1820s Antique Keystone

Materials

Sandstone

Horse Head Marble Keystone
Horse Head Marble Keystone

Horse Head Marble Keystone

Unavailable|$1,165

Horse Head Marble Keystone

Located in London, GB

An elegant marble sculpture of a horse head used as a keystone most probably for an archway. French

Category

Early 20th Century French Edwardian Antique Keystone

Materials

Marble

1920s Keystone Opthalmic Binocular
1920s Keystone Opthalmic Binocular

1920s Keystone Opthalmic Binocular

Located in Toronto, ON

This early Keystone Ophthalmic Telebinocular is the accepted Pioneer instrument of modern binocular

Category

1920s American Antique Keystone

Materials

Iron

Keystone Cop Double Sided Whirligig
Keystone Cop Double Sided Whirligig

Keystone Cop Double Sided Whirligig

Located in Hadley, MA

Excellent pine whirligig carving of Fatty Arbuckle, the famous Keystone Cop. All original

Category

Early 20th Century American Folk Art Antique Keystone

Materials

Pine

Rare Carved Limestone American Eagle Keystone, Wall Street, NY
Rare Carved Limestone American Eagle Keystone, Wall Street, NY

Rare Carved Limestone American Eagle Keystone, Wall Street, NY

Located in Hudson, NY

Rare Carved Limestone American Eagle Keystone, Wall Street NY, salvaged by Urban Archeology from a

Category

Early 1900s North American Antique Keystone

Historical Keystone of Bacchus from John Jacob Astor’s Newport Estate
Historical Keystone of Bacchus from John Jacob Astor’s Newport Estate

Historical Keystone of Bacchus from John Jacob Astor’s Newport Estate

Located in New Haven, CT

hand carved French sandstone keystone of Bacchus or Autumn was commissioned by famous Philadelphia

Category

Early 1900s Louis XVI Antique Keystone

Materials

Sandstone

Large 19th Century Mid-Victorian Arched Carrara Marble Fireplace Surround
Large 19th Century Mid-Victorian Arched Carrara Marble Fireplace Surround

Large 19th Century Mid-Victorian Arched Carrara Marble Fireplace Surround

Located in Manchester, GB

to the spandrels are flanked by quarter round outside fillets and meet at the fluted carved keystone

Category

19th Century English Victorian Antique Keystone

Materials

Carrara Marble

Large White Marble Mortar 16th Century with carved Lateral Mascarons.
Large White Marble Mortar 16th Century with carved Lateral Mascarons.

Large White Marble Mortar 16th Century with carved Lateral Mascarons.

Located in Bonita Springs, FL

were typically placed on keystones, arches, fountains, facades or home objects. While they were

Category

16th Century Italian Baroque Antique Keystone

Materials

Marble

Pr. Architectural Elements on Bases
Pr. Architectural Elements on Bases

Pr. Architectural Elements on Bases

Located in Toronto, ON

Pr.19th Century Terracotta keystones from Chicago on custom steel bases.

Category

19th Century American Antique Keystone

Materials

Steel

Large Indiana Limestone Tudor Revival Style Fireplace Mantel
Large Indiana Limestone Tudor Revival Style Fireplace Mantel

Large Indiana Limestone Tudor Revival Style Fireplace Mantel

Located in New York, NY

, pointed arch firebox opening and crest keystone. Opening: 36 W x 36 H.

Category

19th Century American Tudor Antique Keystone

Materials

Limestone

Hamilton Double Roller 992e Pocket Watch 3262545 Case
Hamilton Double Roller 992e Pocket Watch 3262545 Case

Hamilton Double Roller 992e Pocket Watch 3262545 Case

By Hamilton

Located in Surfside, FL

Adjusted Positions. Case Signed "Keystone base metal 3262545" Fine Pre-owned Hamilton Watch. Certified

Category

Early 1900s Antique Keystone

Reclaimed 19th Century arched Victorian Carrara marble fireplace surround
Reclaimed 19th Century arched Victorian Carrara marble fireplace surround

Reclaimed 19th Century arched Victorian Carrara marble fireplace surround

Located in Manchester, GB

mantle sits above a plain keystone. The spandrels carved with a four point star within a ring where the

Category

19th Century English Victorian Antique Keystone

Materials

Carrara Marble

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Antique Keystone For Sale on 1stDibs

At 1stDibs, there are many versions of the ideal antique keystone for your home. Frequently made of stone, metal and limestone, every antique keystone was constructed with great care. You’ve searched high and low for the perfect antique keystone — we have versions that date back to the 18th Century alongside those produced as recently as the 20th Century are available. An antique keystone, designed in the Neoclassical, Victorian or Baroque style, is generally a popular piece of furniture. A well-made antique keystone has long been a part of the offerings for many furniture designers and manufacturers, but those produced by Keystone Manufacturing Company and Keystone Iron & Steel Works are consistently popular.

How Much is a Antique Keystone?

The average selling price for an antique keystone at 1stDibs is $1,600, while they’re typically $450 on the low end and $24,000 for the highest priced.