Seller: iowa_downtheroad (801) 100%, Location: Des Moines, Iowa, Ships to: US & many other countries, Item: 132002741773 Condition: Excellent working condition, Color: Black, Maker: P & F Corbin, New Britain, CT, Material: Metal, Details: Here is a beautiful rare antique door knob lock set patented 1905 made by Corbin. This set is in very good condition and functions as smooth as can be!! The inside plate has all the patented dates listed. It has a turn lock on each side with a half moon shaped lock turn knob. We are not sure exactly what type of metal this is. Possible cast iron cast bronze but not sure. The rectangular plate measures 4 1/4 X 3 5/8". This piece operates perfectly and is ready for a new home! Please review the photos and if you have any questions... please ask. Thanks and happy bidding! Check out our eBay store for a whole lot more!