i have a shot gun thats side-by-side, hammer less. it was made by riverside arms in chicopee falls mass. usa, the pat was placed apr/20/1915, its serial number is 38721 and on the under side of the barrels theres an H, and on the bottom of he action their is an I. can i have help getting more info on this shotgun? it needs wuite a bit of work done, it needs gone over entirely to get it back to fireing condition.