Item description for NOS Vintage National Builders Hardware Brass Butt Door Hinges 3.5 x 3.5 Made USA

For Sale Vintage NOS Pair of 3.5" x 3.5" Brass Door Hinges made by National Mfg. Co Builders Hardware Made in Sterling Illinois USA. In Original box No. 512RC. Screws still inside the box.

These are probably from at least the 1970's and have never been used.