Jtplumb,
I can't say the hinge pin wasn't replaced, but replacing it often results in a small "gap" in front of the underlug, which is not obvious on your gun. Another method of tightening a gun is sometimes performed on one that is "for sale". In this method, the hinge pin is expanded and the forearm "iron" is stretched( bearing harder on the frame). Until it "wears in", this usually results in the forearm being harder to remove. You might be able to tell if this was done. If you take the "iron" out of the forearm, you might see dimples on the backside, caused by a rounded chisel like punch used to stretch it out a couple thousanths. The gun was made before modern shot cups( Suhl didn't start dating the proofs until 1921-2), so I wouldn't hesitate to open the chokes to work better with modern shells. You can be proud of the gun, enjoy it.
Mike

Last edited by Der Ami; 08/14/20 10:05 AM.