How do I identify vintage Stiffel lamps?

To identify vintage Stiffel lamps, first check a piece for any markings. Nearly all Stiffel lamps have a marking at least on the switch, but some also feature large foil stamps on their bases or bulb sockets. By comparing the marks on your lamp to images and descriptions published on trusted online resources, you can often determine approximately when Stiffel produced your lamp. If your lamp is 20 to 99 years old, it is vintage. Older Stiffel lamps are antiques, and newer ones are contemporary. When in doubt, consult a certified appraiser or knowledgeable antique dealer. Find an assortment of Stiffel lamps on 1stDibs.