This is a Heuer Carrera 73653 S made for Dugena. They did this a fair bit in the early 70s and these examples can be had at a considerably more reasonable price, even though they are identical (with a different logo of course.)
Looks great on the bracelet, but I guess you are more a strap guy.
Have you already ordered any nice strap?
Hey, I'm enjoying the bracelet strangely enough 馃榾 I have ordered a custom made NATO strap from London, just deciding on the specs now. Too much choice!