Hi,
I asked because I have them stamped on the bottom ,the top and stamped with 112 and 500 on the same sheath, I've never bought a 112 with more than 2 inlay rivets except 1 with 3 small inlay rivets and a 4 inlay rivet 112,The sheath that came with the 4 inlay rivets is stamped on the bottom I was going to see if could match them up, now I think it could be any year will go with any sheath, because I have, 3 1's no 2's, 3 3's, 4 4's , 2 5's thats the 2 inlay rivet ebony,and I have a 4 rivet I almost forgot about. I just ran them down like that because it's easy, most of sheaths came with the 112 on the bottom. I know a 1,1 came with a sheath that was suppose to be correct and it's stamped on the bottom, Buck may have made all three in 1972, I don't think there is a answer
George God bless