What was I thinking....
How about the 1942 NZ-marked Long Branch No.4 Mk.1* I picked up a short while ago. It looks like it has spent almost all of its life in storage. All parts are LB marked and, as far as I can tell, it has not been monkeyed with since it left Long Branch. Can I prove that it is factory original? No. Can I take a bloody good guess? Yes.