Hey Guys I thought I would add my 1945 Matching (wood it not serialized) Long Branch to the list:
No 4 MK I* - 1945 - s/n 87L4851
-LB Sight Mk 3
-Steel Butt Plate
-Upper Handgaurd is Grooved
-Long Branch Split bottom magazine (no serial number)
The odd thing about mine is I don't see any rework markings on the gun the only real feature I have is the Ishy/Brit screw was installed at one point but has since been removed and filled. It also has the early England import mark on the barrel from when it went into the states.