Another reason for finding out the serial number is the significance of the date it was made and shipped. One of the 21s I have is a trap grade- serial number 1975X and was shipped from Winchester on 9/12/47. The day I was born.
How'd you manage that Jimmy, did you find out after you bought the gun, did you know before you bought it or did you search it out?
I'd love to have a nice gun that came out of the factory on the same day I did, the best I have managed is to garner some minty M94's and Marlin 336's from 1955.
