I was cleaning my old Win. model 72 .22 the other day. I haven't shot it in a year. It never dawned on me before this. There is no serial number anywhere to be found. This rifle was bought by my grandfather, who knows when, probably in the 40's, maybe earlier. My dad gave it to me in 1979. It is the rifle that I learned shooting, and gun saftey with as a kid. I think dad let me start taking it into the fields of our farm when I was 11 or twelve. I started shooting it at about age 7. I love this great shooting rifle. I used to take ground squirrls at 100 to 200 yards with open sights. It has never had a scope on it. I still love shooting it, but with the crunch on .22lr, it has just been a safe queen this last year. So no serial. Am I in trouble?