Seller: twopapa (3,451) 100%, Location: Kankakee, Illinois, Ships to: US, Item: 112214161250 I have three locks available so when you check out, be sure to include the quantity 1, 2, or 3.THE BUY IT NOW PRICE IS FOR ONE LOCK ONLY.All brass, 1930’s or 40’s. Two steel keys marked B of F Chicago. Marked NP911. Back plate measures 2 1/8 by 1 ¾ inch. Depth of main body is a ½ inch plus another 3/8” for round key extrusion on face. Diameter of round lock housing is 1 ¾ inch. This is the lock used in many of the old wood work benches but probably hundreds of other things also. Mint condition, unused. Each lock weighs 4.6 ounces.