I have a Manahattan Arms Co 12ga hammer gun in excellent mechanical condition. I've shot it in the past and want to shoot it a little now. I ordered some low pressure 2 1/2" 7/8 loads from polywad. Wondering about the overall quality and value of these guns. This one is marked "Manhattan Arms Co" on the left sideplate and "The Interchangeable" on the right. The top of the rib is marked "Belgium - Damascus Like Finish". Not sure if this is damascuse or a transition gun from when steel bbls were made to look like damascus. Serial number is 569 with a 7 under that.