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1943 passport for one 'Herman the Cat', Expert Mouser, veteran of the US Coast Guard o7
(media.kbin.social)
Just a magazine for everyone to share artifacts and replicas for the historically-inclined to admire!
Coolest thing I've seen all day
Also, he's from my home state, so that's doubly cool. Maryland represent!
I saw this on tumblr recently and it turns out that unfortunately this was a prop for some war propaganda movie.
The link that you provided says that it's from Pathe Newsreels, which is somewhat different than "some war propaganda movie".
Seems legit? I mean, it's not that animals required passports to be on ships, but that they gave the little mouser one to make him part of the crew.