Looking for some help/direction with a No 4 Mk 1 T

[bigduke6]

The S51 was done with 3 individual stamps. How do I know this? I took the actual 5 and 1 (the S wasn't there.....) off the examiners bench when I went to the old original H&H factory before it closed shortly afterwards. Did I take anything else interesting? Don't even ask but look at the Armourers perspective.

Thanks Peter, Have read the book a few times and the scope book.... still can't take all the info in, but they are well thumbed.