can anyone help me ID this BP Pistol , its a 31 cal pocket pistol , the only writing on the top strap is Jam Springfield mas. the cylinder has warner"s pat. 1852, no writing on the barrel, if anyone can help with the model and possible year it would be greatly appreciated, and if the Gun and case with items has any value, the trigger spring or bolt spring is broke but if you hold the trigger forward the hammer will stay cocked, I don't plan on doing anything with this