Don't know much about vintage Heuer but know I like this one.
embarrassing question: how does on remove links from this particular bracelet? are they such pins?

 

This is a gorgeous watch, I used to own one - and look at my avatar btw ;-)!
Such a clear dial and the domed crystal makes it even nicer than the 510.50x which sport a mineral flat one.
The bracelet is push and pin if my memory does not fail me, but I clearly remember I had to resize it and it was a hellish job!
However it's also one of the best bracelets: comfortable and very robust - a stark improvement compared to its contemporary peers in Heuer catalogue.
Wear it in good health.
Cheers,
Fabrizio