SN: 12857. Made in 1937. 22 LR caliber with a 6” barrel. This gun is in very fine condition with 85% of the original blue. Grips are excellent. The backs strap is marked “U. S. Coast Guard” on the back strap. This gun comes with a factory letter confirming the configuration including the Coast Guard marking. This gun was also shipped to the Coast guard Depot in Curtis Bay, Maryland. This gun was one of 25 shipped. This is the only one we have seen or that we can find for sale!