I've just bought this one and am pretty confident it's OK, but there are a couple of things that trouble me with it. I only have Ron's first book, so just not enough info.
The pros are that the lug is stamped "753", the tang is marked with a forge mark "P reversed & 4" and the crossguards and pommel not are all plated aluminium.
The cons are that there are no umlats on the maker mark, the lug doesn't have the bevel on the bottom edge, and the motto point is 31mm from the crossguard, too far???
I call on the NPEA Gods for help... are there red flags here?
Thanks, Red
