Odd No4 number?

[Amatikulu]

Patrick,

I am not certain, based on my limited observations that the FB25939A is the original serial number as given in 1943 or if it is a new or modified serial number assigned at FTR. However, the A suffix is normally associated with a rifles serial number where non interchangeable parts have been fitted and I do not understand why in 1948, a non interchangeable part would be fitted at FTR to warrant the addition of the "A." Surely at FTR, if the rifle was to be factory thorough reconditioned, then with the amount of rifles available post WW2, any rifle that could not have been returned to 100% standard would have been discarded.

This leads me to conclude that the serial number observed is the correct serial number assigned at the time of original manufacture. Thoughts anyone?