Rare 1930's Remington 32 S&W Long Proof Cartridges Dog Bone

This is a full, 50 original rounds, of .32 S&W Long Proof Cartridges manufactured by Remington UMC. The early 1930's "Dog Bone" Kleanbore, one piece box has "R171" load index code and "Proof Cartridges" sticker over 3 sides and ink overprint on the bottom. This is an excellent box, crisp in every way that is fresh from a brick. The cartridges are in excellent condition and have the black factory coating to identify them as proof loads. These were purportedly from the H&R factory collection. A very rare proof load in a desirable box that is in excellent condition.