Antique Keystone

"Jean Cocteau" by Keystone-France Portrait in the 1920s or 1930s of the writer Jean Cocteau in a decor that relates to his passion for Greek tragedy.

Keystone broom corn supplies metal advertising sign 22.75" x 25.5"

Coade style Keystone of Democritus. A brilliant keystone of Democritus, an Ancient Greek philosopher.

A large carved Portland stone keystone, likely eighteenth century, the tapered form with female mask carved to the front face.

An enormous, English carved Portland Stone keystone, Edwardian c.1905, with a female mask to the front.

A 19th Century Victorian carrara marble mantel keystone with a carved scallop shell. This is a beautiful antique carved marble fireplace mantel keystone, featuring a scallop shell de...

An antique carved limestone keystones of a Queen, salvaged from a period building in East Anglia.

An antique carved limestone keystones of an English king, salvaged from a period building in East Anglia.

This antique keystone is the centerpiece of a Victorian marble fireplace mantle.

A Coade Keystone of Minerva Dated 1794. Stamped Coade, London, and is dated 1794.

A very large and unusual antique stoneware keystone attributed to Blanchard (unsigned), circa 1865.

Magnificent Portland stone Keystones, reclaimed from Lower Regents Street, London.

An antique Lipscombe & Co glazed terracotta keystone of a Green Man mask, reclaimed from a British private home.

Continental, possibly German, '19th centurty' white porcelain keystone shaped wall mirror with yellow trim and floral decoration having a floral pediment (similar to VCG005).     

Continental (possibly German 19th century) white porcelain keystone shaped wall mirror with yellow trim and floral decoration having a floral pediment and etched glass with a figure ...

(stamped) glazed terracotta keystone of a Green Man mask, reclaimed from a British private home, mounted on a bespoke steel stand for interior display.

Antique Neoclassical Carved Italian Carrara Marble Mantel Keystone Architectural Elements - a Pair. Circa Early 20th Century.

Antique Map of Southeastern Pennsylvania – Rand McNally, circa 1888 This antique map of southeastern Pennsylvania was published by Rand, McNally & Co. around 1888, taken from one of...

DESIGNER: Elgin CIRCA: 1900s MATERIALS: 14k Gold, Enamel GEMSTONE: Diamond WEIGHT: 40.5 Grams MEASUREMENTS: Diameter - 1 5/16" HALLMARKS: 14K, Keystone & serial number

Antique Map of Manitoba, Canada – Rand McNally, circa 1888 Description: This antique map of Manitoba was published by Rand, McNally & Co. around 1888. It offers a detailed look at t...

Antique Map of Northeastern Pennsylvania – Rand McNally, circa 1888 This antique map of northeastern Pennsylvania was published by Rand, McNally & Co. around 1888. Taken from one of...

Antique Map of Southwestern Pennsylvania – Rand McNally, circa 1888 This antique map of southwestern Pennsylvania was published by Rand, McNally & Co. around 1888. It comes from the...

Antique Map of Northwestern Pennsylvania – Rand McNally, circa 1888 This finely detailed antique map of northwestern Pennsylvania was published by Rand, McNally & Co. around 1888. I...

More information coming soon… Originally the keystone for a French architectural item, this highly carved mascaron dates to circa 1850.

17th century Spanish pair of hand carved church arched vault keystones.

Beautifully crafted antique Waltham pocket watch in a stunning solid 14k yellow gold hunters case by Keystone (for repair). This pocket watch is circa late 1800's to early 1900's and...

In sterling silver. In the Keystone pattern. Comprising a youth fork, knife, and spoon.

16th century Spanish round shaped keystone wedged in the ceiling, where arches meet the apex of a vault.   

The moulded jambs surmounted by arched frieze carved with leaf work and scrolled keystone to centre. Small scale, well suited to a Study, Bedroom or smaller Drawing Room.

The frieze with matching guilloche motif with scrolled central keystone with stiff acanthus leaf below. Moulded shelf above.

A well carved Renaissance style fireplace in limestone, with a centre keystone to frieze, and deeply carved drops of ribbons and flowers to jambs, surmounted by three-piece breakfron...

The arched spandrels with inner rope moulding and scrollwork above, with carved keystone to centre. Moulded shelf above. English, mid 19th century.

The arched opening with panels and rope moulding, surmounted by carved guilloche motif and scrolled keystone to centre. The jambs each with pair of scrolled brackets with acanthus ca...

A fine English corner cupboard or display shelving cabinet of patinated pine from the Georgian Era, featuring crown moulding, a moulded column arch with decoratively-carved keystone,...

The panelled frieze with white marble moulding, and gently shaped stretcher below with marble keystone. Surmounted by moulded shelf, French, early 19th century.

Iron Age Moss Covered Granite Figurehead found in County Waterford, belonging to a castle in the region. Most likely a keystone or cornerstone piece in an Anglo-Norman castle archway.

The bottom pendant is a bezel set emerald cut diamond surrounded by a halo of twenty-two square or keystone shaped step cut natural emeralds. Now that all the technical jargon's out...

Although Howard himself retired in 1882 and the original company ceased its independent watch manufacturing by 1903, the brand name carried such a formidable reputation for accuracy ...

In 1903, the Howard Watch Company was acquired by the Keystone Watch Case Company. Keystone continued to produce Howard watches under the Howard brand name until 1935.

.: 24520445 Case Maker: Keystone Case Material: Solid 14k Yellow Gold Case Type: Open Face Case Serial No.: 5617007 Case Diameter: 45mm Weight: 65.1 Grams (Case and Movement) Conditi...

Movement: Mechanical - Hand Wound - Stem Set - 21 Jewels - Size 10S - American-Made Movement Serial No.: 4697 Case Maker: Keystone Case Material: Solid 14k White Gold Case Type: Open...

.: 16263294 Case Maker: Keystone Watch Case Co. Case Material: Solid 14k Yellow Gold Case Type: Open Face Case Serial No.: 5296589 Case Diameter: 29mm Weight: 19.4 Grams (Case and Mo...

These are in turn centred by a splayed keystone to the centre. The wide sturdy jambs hosting the spandrels have deep returns, giving this piece a grand appearance, finishing onto mou...

A protean figure hovering between the apotropaic grotesque and a celebration of the natural world, it adorns capitals, keystones, misericords and corbels alike. The schematic yet vig...

This impressive Victorian arched fireplace mantel is crafted from fine Carrara marble and features a distinctive central keystone. A deep, refined shelf rests on substantial scrolled...

The clean ivory dial presents bold Arabic numerals with a recessed seconds subdial and original blued-steel hands, all framed by the warm glow of a thick, fully hallmarked 14K Keysto...

The keystone is worn as the mark of a high fraternal order.

This exquisite piece showcases a hand-carved motif adorning the keystone, complemented by elegantly fluted columns on each leg, featuring a refined three-flute design.

A nineteenth century Victorian Carrara marble fireplace, English, in the French taste, the curvaceous shelf with egg and dart mould to the front edge, the frieze with spandrels centr...

18th century Welsh oak low dresser of strong architectural form, the simple planked top over two banks of drawers flanking a central arched door with keystone and compass star inlay,...

A large and dignified early eighteenth-century Queen Anne or George I stone frame fireplace surround, the shallow shelf above shallow arched frieze and jambs with carved fielded pane...

19th century Petite French carved oak secretary writing desk Louis XVI style ~Direct from France~ ~Beautiful antique French carved oak secretary with fabulous detailing throughout~ ...

Hand crafted from solid oak, the lines are tailored with keystone-shaped seatbacks contoured for comfort with dished out corners providing no sharp corners into the traffic spaces ar...

Far from an isolated curiosity, Seated Woman emerges as a keystone—clarifying Schubert’s development, illuminating the ambitions of Munka, and underscoring Bortnyik’s pivotal role in...

In 1903, the Howard Watch Company was acquired by the Keystone Watch Case Company. Keystone continued to produce Howard watches under the Howard brand name until 1935.

A sizable serpentine shaped mantelpiece with moulded edges, curves forward over the keystone. The recessed panelled keystone connects two arches, these are beautifully carved in each...

19th century round table top in Egyptian porphyry, base as a keystone support in Carrara white marble leonine legs.