...aren't they different?? One 11063V and one 'real' 11630MH, the latter much rarer lately. They shared the same coding over time, but actually the 11063V-cased one was later, appearing in Heuer catalogues till the mid-80's.

See how the pushers fit into the case: in one case (AndyO's) they seem to cut deep into the case side and are partly visible from the front as well.
That's the later (or latest, as Heuer folded shortly thereafter before being reborn as TAG Heuer) design, and should be 11063V btwn lower lugs.
Tiga's instead has a straight and uncut case side: Tiga, would you mind posting a pusher-side side picture?

See ape's excellent tutorial on the topic:

http://www.heuerautavia.com/00000099190796605/000000991907a4c0f/00000099ec0e9341f/index.html

I like them both, but indeed I find the later 11063V (that's AndyO's) even better.

Cheers.

Fabrizio