Welcome to the forum from New York.
The following serial number information is for Remingtion firearms manufactured after 1921
Remingtons manufactured after 1921 have a code located on the left side of the barrel near the frame that identifies the year and month of manufacture. The following letters correspond to the months of the year, for example B=January, L= February and so on:
B – L – A – C – K – P – O – W – D – E – R – X