You are looking at a Marx Tin Litho Clicker Type Springfield Rifle. Appears to only be missing a shoulder strap. Well worn and used in many battles. Clicker is not snapping at this time, but there is good tension and recoil on trigger. Measures 30 inches long. I've looked hard to find this toy, but can not find any here on the internet, or through other collector friends. I'm not sure of value and even wonder if it is a prototype, don't know. Any help would be appreciated if you find this toy and know anything about it, please drop me an email. As for figuring out how to value her, I can't. Invaluable seems right to me and any tried and true Marx collector. Shipping is 15.00. New York residents please add sales tax. I accept PayPal. Thanks for looking and feel free to ask any questions. I'll answer them as quickly as I can.