First, the gun was manufactured c.1912. It is chambered for the .22 Winchester Automatic cartridge - different from the common .22LR of today. The Model 1903 is collectable, but value depends heavily on condition and originality. There were also subvariants of the model that are extremely rare. Assuming you have a standard rifle, in typical 80% condition, value would be around $300-$350. A mint condition specimen will easily bring 3x that. If you can take good clear digital pictures of the gun from all angles we can give you a much better evaluation. sales@countrygunsmith.net