Your shirt has buttons on the cuffs. And there is no silk lining on the collar or the cuffs. The shirt in question should have no buttons on the cuffs and silk lining in the collar and cuffs. Your shirt seems to be missing those items. ? Or am I missing something?

Probably couldn’t get their hands on one so they made their own.

I brought that up too in the now closed thread.

You hit the nail on the head ;)

I might be wrong, but wasn't that very common up until the 1960s? I have seen a number of shirts fromthe 1940s, 1950s and late 1960s, which had numbers and some letters "embroidered" (actually it was just kind of a laundry number quickly done with needle and thread to identify the item)

Exactly   I will now no longer participate in this conversation since the poster has decided not to answer my question.   But I will get my pop corn and continue watching, 

Doesn't AI generate its "knowledge" by searching things that are already on the internet? So, by him constantly writing about it here, AI is getting its information from here and making the claim sound more credible.

I know I’m a little late to the finish line here but if you guys are still interested in the topic I have one that came in a grouping directly from a Paramarine (over 30 years ago now) who was medically discharged in late 1944. He said he had gotten it during his time in the service and the stencil is like the one in Chesty’s painting, not like the other examples shared here in the thread. It is also marked on the back with his last name across the shoulders and below a large Paramarine insignia. I do not usually photograph my collection so excuse the photos of the jacket, they are all I could find on my phone.  

What intrigues me is that AI mentions the embroidery in the neck.

That is an impressive collection! And a great idea with the velcro panels!   Jules