Hi Guys.I have these three old BSA rifles and would like to date them and find out exactly what they are.Info from the guns from top down.

TOP 45.5" Approx long marked as a BSA standard .22 no T7021

Middle 39 3/4" Approx long no L13363

Bottom 39" Approx long no 19227 improved model D [Has Lincoln Jeffries patent 8761704 on the under lever.]

Any info would be great thank you.