From the 4th edition blue book of airguns: The Schimel was the first of a series of pistols made from the same general design by Orville Schimel. Due to undercapitalization and a number of design flaws in the Schimel; the tiny maker went bankrupt. In 1955 , the manufacturing fixtures were aquired by American Weapons Corporation, headed by Hy Hunter. The unsatisfactory seals were replaced by a one seal unit and an ingenious 8 shot magazine for 22 cal lead balls was added. The improved design was marketed as the American Luger. Stoeger arms had the US ownership of the Luger trademark and quickly force these "American Lugers" from the market making them very rare pistols. Smith (1957) heralds these as the first American-made CO2 production pistol and the first to use disposable CO2 cartridges. Values: GP-22 100%-$225 95%-$195 90%-$160 80%-$125 60%-$100 American Luger 100%-$950 95%-$800 90%-$700 80%-$600 60%-$500 Add 15% for factory box Subtract 5% for Model P-22 marking Subtract 40% for broken back strap Keep in mind these prices are a good starting place, but to get these prices you have to find someone who wants to PAY these prices.