If the first number on the bracket was 3, then it would have come from a BSA T. Waht is the 'Ive been staked mark' JM? And another thing shootingmaster, a wise old man called John Sookey told me once '.............. only buy the rifle and NEVER buy the story'
I have learned since the little book was published that although the spec sheet implied that the rifles for conversion to T spec should be 'as produced' (as the No4Trials I suppose), many were converted and passed with the solid block band foresight so don't fret unduly about that