Well, early to mid-1944 would be fine, even some later '44 the quality is still better then some other countries. Gunbroaker and auction arms are two good places to start as you can see pictures for the guns. Does code or who made the arm matter to you? There were a lot of manufacturs in '44. Gun shows are becoming a pain to go to and around here I have not seen any good ones at all just RC mausers. You should be able to find a bolt mm '44 for say $600 or maybe a little less if it is a common code say BYF.