Thanks chaps. Scout Sniper, you have keener eyes than I! True, it does not look like there is a scope serial number on the butt, though did Ian mention that it was a replacement? Even so, if it was replaced in military service & the rifle was scoped up, the number would have been transferred across to the new butt................just thinking out loud!

I think the overstamped/poorly stamped marking on the butt socket was probably 'FTR'. It's quite common on T's to see it stamped there, as opposed to engraved on the receiver side wall as on regular No4's.......