greg you're receiver is a type 1 which will always say G43 no matter what year even in 1945 that marking was applied at the sub-contractor. There are some where they over stamped K43 next to it. But those are quite scarce. Ceaser has a type 2 or standard wather rough type where the marking of G or K was applied @ walther. I think the change took place in the M block. A quick flip through weaver's book would comfirm this.
Not only a nice rifle, but an "awj" K43 magazine.
Made by the Yale & Towne Manufacturing Company - address Heidestrasse 71 in Velbert/Rheinland. In my limited experience this is a fairly rare and seldom encountered magazine. I think this was an American or English company in Germany that was taken over by the Nazis after the war started?? Does anyone know if this is true?
Thats what I was trying to explain. K43 marked G43. I just had someone email some photos of a G43 ac45 "a" block that wasnt re-stamped and its blued.
It may come down to weather they came from the french sub-contractor or walther werke2. But, mauser k98's also flip flop from blued to phosphate with no ryme or reason. Walther g43's in 1945 can have quite a varitiy of receiver types and finish.