This is an odd one. Antique Arts and Crafts hammered copper Roycroft candle sconce converted Into electric light.(nightlight) The piece has original patina and is in fine shape. I found this with the addition of the electric element that appears to be from the period. I did however have the piece rewired with silk covered cord and removed the tattered damaged original cord. I don't know the significance of the crude small "w" on the back. My feelings are that it was converted early in its life and may even have been a custom request from Roycroft. Who knows? It is cool.