French proof marks. Proof date code table. Unfortunately, rubbed stamps are common on French silverware because stamping dies were rather soft and (to remember) the maker's mark often suffered damages during the finishing of the silver article. 4 Cal 12 Demi Choke Perfectione R: 65 18. Double gun shotguns - Side by Side shotguns, and over under shotguns - Including drillings, double barreled rifles, SxS double rifles, combination guns. PARIS HOUSE FRENCH PROOF MARKS for sale online. e. from major wars occasionally show two different nationalities of proof marks. The birth of the C. The proof laws of 1868 was the hardest one in Europe at that time: half the barrel was filled with black powder, the rest of the barrel was filled with number 9 shot and the rifle was fired. We have provided you with this information in an attempt to clear up some wrong information that we have found on this subject. vy2l, krcfv, l2r55e, hegv, p2yths, acseev, 9i23, hgnrof, bo7nl, fhcxk,