Steve,
I'll get mine out tomorrow and take some shots for you with measurements if poss.
I was talking with Roger and Nigel about why some Enforcers had double lozenges where the serial number and other writing goes, only to find that the simple answer was some were Envoys first and the double cut was simply to cover up that fact and reinstate a new number.
Of course the easy print went directly onto the metalwork so there was no lozenge at all.
Enfields are a crazy rifle when you consider the amount of variations and tales and stories that go with converting them.
Worn out just listening to 4T conversions and all the stamps.............need a lay down now