I have a 1944 BSA No1 MkIII rifle with an A prefix in serial number. Lots of matching numbers on wood and metal, was FTR in 1953. I am curious about the A, can't find any info on it.
https://www.milsurps.com/images/impo.../YfWg22H-1.jpg
https://www.milsurps.com/images/impo.../F53VHpL-1.jpg
https://www.milsurps.com/images/impo.../ZXmcFa0-1.jpg
https://www.milsurps.com/images/impo.../KYweB3G-1.jpg
https://www.milsurps.com/images/impo.../upknEqY-1.jpg
https://www.milsurps.com/images/impo.../kxdqFyJ-1.jpg