
Undated
The Stiffel Lamp Company
Rounded rectangular black border, Chicago street address and model fields. The visible 4 96 code belongs to this example.
Read the stamp
Antique lamp identification separates the body from replaceable fittings; a socket or burner can carry its own manufacturer and patent wording.
Look under the base, inside an accessible shade rim and on a label attached to the body. A socket or burner often carries its own manufacturer and patent wording. Those parts can be replaced without changing the lamp body.
Record the body mark, base construction, shade fitting and overall form. An electrical safety label identifies approval information, while a foundry or maker stamp is a different clue. Keep patent and component dates separate from the lamp’s age.