Came across these today doing some reorganization in the shop. I have 12 of them, 10 are NOS with original paint and the other two have been cleaned. Have no idea how complete they are, as they are before size standardization. Sizes listed on them are Nut, CAP, USS and OC. I think I got tired of trying to find sizes I didn't have and put them away. If anyone has any of them send me a PM with the marked sizes and I will check mine and trade with you if I don't have it. Going to SAE sizes they run from 7/16 to 1 1/4 inch.