Jan,I think the collar is closer, but still not quite there. I'm not sure if it's now a bit too wide, or if the collar tips are too angular (Jorge's jacket seems to have rather rounded collar tips), but this is definitely a step in the right direction. I'll look forward to hearing what other people think.
That said, I think the collar as it is now would be great for an AN-J-4.
Regarding the label, I'd look at the pics from the original Jorge posted here: https://www.vintageleatherjackets.o...rp-n-y-spec-m-445a-heavy-winter-jacket.25003/ He has got a good, clear picture of what the label looks like.
I think the enlarged collar is not too wide, but the shape is off. I tried to figure out why, but being no expert in these types of jackets, I have reached my limits pretty soon...
What I noticed is that original collar seem to be more rounded, and none of them "rides up" in the back of the neck (here compared to Shaw's "old" collar shape):
They seem to lie down rather flat:
This original collar shows a downward curve on the upper and lower line, while Shawn's jacket is the exact opposite. Maybe this is the same, when the jacket is worn...as I said, I do not really know what the problem is.