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Is that from this week's auction?
Not double signed in the usual sense but still interesting. Think the logo is from the Saudi army https://www.chrono24.nl/universalgenve/saudi-arabia-vintage-32mm-18k-rose-gold--id28144577.htm
Another Mersmann. This one has a caseback shot. Ref 5631. Basically identical to the one above but with a matte dial https://www.ebay.com/itm/154827721868