Originally Posted by 0321jarhead
Good question. There is a listing compiled from factory records by the well-known firearms and historian, Branko Bogdanovic. It can be found on page 29 in the book titled, The SKS Carbine (CKC45g) by Steve Kehaya and Joe Poyer.
Did Branko's listing match up with the trend that was starting to show over on Withergyld's chart on SKS Boards? His chart is based on the years stamped in the log books that came with the M59/66 rifles, but there were never any log books included with the M59 rifles. If the trend stayed the same then it would imply that M59s didn't really start full production until 1964 with the "A" serial numbers, then "B" in 1965 and "C" in 1966.