Hey all, I just bought a 39AS original golden .22 rifle that is in new never used condition. I know that to determine the year manufactured you usually subtract the first two numbers from 100. I have a 1975 model also that starts with the number 25. Some folks had told me that the newer rifles had a different way to tell...is there any truth to that? This new rifle has a serial number starting with 07. I'm sure there is probably a post on here discussing this but I can't seem to find it. It has the safety and checkered stocks. Sorry for the silly question but I knew someone here could help me. Thanks.