Heuer Calculator 110.653 with Beechcraft (Aircraft Co.) logo. Pricey at US$7,200 tho
And yes, the caseback is engraved to match the airplane's registration number.
You've got a real beauty and a pretty damn good shot of it here too, congratulations👍 Is this an NSA or aftermarket bracelet? Unusual to see this for me, although I do like the pairing. Makes it look kinda Montrealish...😉
It’s a Heuer bracelet and I believe it to be period correct; but IIRC the 110.573 never came on those but rather on “Flat Oyster” bracelets or rubber (for the later years of commercialization)…
I’m not sure which 70s Heuers used my bracelet nor what it’s exact name is; but I do think that Abel called it an “NSA”, too. Originally, it had a 19mm lug width and it uses a spring-loaded clasp (super comfy - Why did the industry stop making these?).
Stepped into Bucherer GVA for something completely unrelated and stumbled across this beauty in their pre-owned department…
EDIT: Here’s the direct link to Bucherer’s sales pitch for that 11630: https://www.bucherer.com/ch/en/certifiedpreowned/tag-heuer/autavia/1341-994-8.html