Stiffel Bouillotte 4 Candelabra Lamp date?

Hello, I'm a new member, and I've been trying to nail down a time frame for when my Stiffel Bouillotte Lamp was manufactured. My grandmother received it as a gift from a wealthy Pittsburgh Industrialist's wife who she worked for. They were having their digs redecorated, anywhere from the 30's to the mid 50's... It's an amazing piece, I have yet to find another one like it on line. Most have 2 or three candelabras. The lamp works great, but the poor shade has seen better days, but it is original, I think! It weighs a t


on!!!!