Hi,
to me it looks ok, at the end of the war things were plundered at various statges of the production?
It could have been removed from a factory that mass produced for other companies to sell on further, those companies could add their end user liecence number would be my guess. I am not an expert, you could try GMIC, WRF and WAF for more informed opinions.
I expect it doesn't glow up under UV?
That said they are getting more and more clever with copies?
Even so, it would make sense for them to fill in a distributers number if you are going to the trouble of faking lables?
I think an original, nicked off a production line by a GI looking for a souvenir before it got to the end distributor.
Best
Rich