Zenith with Air Ministry engravings GB/159

Hi all,

Found a Zenith from 1941 with air ministry markings at the local junk shop. I had a bit of trouble doing research due to the popularity of the omega 6B/159 and the Air Ministry Zenith which had the Weems case. Would anyone be able to teach me about this reference or even point me towards some useful sites or blog posts?
I've attached my photos (unfortunately was not allowed to open the case) and attached a third photo that I was able to find online.

Whoops, looks like the third image didn't load in properly.




Looking at the scratches on the casebacks I think these might be the same watches...

I’m sure there the same watch, a one off fake

Yeah, with a civilian dial like that it's not really worth taking seriously

It’s a nice 12-4 P movement