Arms imported into the U.S. before 1968 were required to be marked with country of origin. Hence, you see Russianicon 91/30's surplused out by Franco's Spain from the Spanish Civil War marked 'MADE IN U.S.icon', Frenchicon GRAS rifles marked "MADE IN FRANCE"--just tells you the weapon was imported as surplus in the 1950's or 1960's before the GCAicon 1968 took effect. Anything sold in the U.S. post 1980's Volkmer McClure Act will be marked with the importer's name. Interestingly, very few Enfield No.2 revolvers seem to have been marked with the "ENGLAND" stamp when imported into this country during the 1960's. On the other side of the coin, a vast number of the Webley .455 Government series revolvers were so stamped before commercial sale here in th U.S. I know for a certainty the country of origin marking was required AT LEAST as far back as the post WWI era here in the U.S. hence all the 1920 commercial 7.65m/m Lugers and Mauser 1910/14 pocket automatics you see for sale at gun shows which are marked "GERMANY".