Mark,
This is the movement from the OP - you need to do the same trick with the browser...

http://image87.webshots.com/87/6/19/36/2537619360072824060erLVhL_fs.jpg

PS. Excellent research!!
Stewart

: Welcome to the forum Tom.

: Now, thanks to Stewart's neat little trick, we can see your photo
: and provide some more information about the watch.

: It's a 3645, as shown in the bottom right of this catalogue from
: 1962:

:
:

: The first 3645s pre-date the Carrera, but they continue to be sold
: alongside Carreras through to the later sixties - we see them in
: the 1967 catalogue too. However, in or around the Carrera launch
: in 1964, they adopt the markers and handset of the Carrera
: rather than the earlier ones we see on your watch, so your watch
: would appear to pre-date 1964. The catalogue also shows prices,
: so had you bought it in 1962, you would have paid $65.50.
: Interestingly, the price hadn't increased at all by 1967 - you
: would have paid the self-same amount 5 years later too. Or
: rather, you would have paid the equivalent amount - with the
: Gübelin markings, the watch would have been purchased in Swiss
: Francs, as Gübelin is a jeweller in Switzerland. As already
: mentioned, we have seen several different Heuer models with
: Gübelin markings on the dial.

: Without being able to see a picture, I can't be entirely sure about
: the movement. Certainly later 3641s and 3645s used the Valjoux
: 92 and chances are these early ones did too, but some of the
: earlier Valjoux movements are also a possibility. The good news
: is that these are well-known movements with far from the worst
: parts availability for vintage movements.