It really depends.
When I had my bcd 1944, she was a very mild RC, in that only the bolt, trigger guard, and stock was matched, the rest of the parts were generally late war in origin.
Compared to my J.P 1940, she has a mix of early and mid war parts with just about everything electropenciled to match. Plum colour was on alot of the parts too including the extractor, magazine spring, and band retaining spring.
I honestly have not seen enough 1945 RC Kar98ks to comment on how Russians would have finished them in the 1950s and '60s.
Judging by Whitey's photos, the lower and upper band are milled pieces from the early war period and the stock could be mid war or earlier given the take down disc (but no view of what type of butt plate it has). It looks like the magazine could be stamped but the picture doesn't show it clearly.
In any event, I think she is worth studying, how many 1945 dated, Mauser made, Kar98ks do you run into these days ?