A Brief Introduction To Firearm Proof Marks

I discuss the purpose of proving firearms and describe proof marks. I then show a variety of examples of different firearms and discuss what each mark means. For a much more comprehensive look at firearm marks watch Forgotten Weapons' video: https://www.youtube.com/watch?v=HCJ4pLmOOjM For a good reference for proof marks from a lot of countries plus date codes look here: http://shotguns.se/html/proofmarks.html Reference Book Mentioned is: The Standard Directory of Proof Marks by Gerhard Wirnsberger.