REALLY LATE ON THIS REPLY......SORRY.
NOT ALL ''IVER JOHNSON'' SHOTGUNS WERE MADE IN THE U.S. of A.
SOME WERE MADE IN MY OLD HOME TOWN OF MONTREAL,QUEBEC-Canada.
NOT ALL SHOTGUNS ARE ''PROOFED''
SOME COMPANIES TAKE A RANDOM SAMPLING ....AND THAT WHOLE BATCH ARE STAMPED WITH THE ''COMPANY PROOF MARK''.
WOULD BE AN EXCELLENT IDEA TO HAVE ALL FIREARMS ''PROOFED'' AS IN EUROPE.