I have "Victory", v112xxx, with a grind mark in the same area. Only mine has a partial semi-circle and partial left leg of the broad arrow remaining. I believe yours would have had the same.
Years ago (at least 25-30), I ordered a few items from Sportsman's Guide. This was when they would send a mystery prize with every order. My prize happen to be 2 boxes of (junk) Russian 22lr. I took them to the range and was shooting them in my MKII and noticed what looked like sawdust...