Hello, I just dug up a gun from my grandfather and wonder if you wouldn't mind giving me an estimate of its worth. It's from Hawes Firearms Company, an Original, Full-Size Western Marshal single-action six-shooter revolver. I have the original box which also contains an additional "cartridge" (please forgive my lack of gun lingo...it's the round piece where you place the bullets!). Other details - Model number: 623BC; Caliber: .22 combo; Barrel: 5-1/2"; Blue Chrome, Model name: Montana Marshal. Thanks for any help you can provide.