Hi-the serial number would be very useful; however this appears to be a later version of the 1153-given the dial and hands style. The tachy ring and movement do point to an earlier execution-as you rightly say though. I guess the dial and hands could have been changed over time, but I can't help but think this is probably a correct piece, just with a left over Cal 11 used. It is unlikely a Cal 12 would be replaced with a Cal 11, and more peculiar things have been know to happen at Heuer!

Not sure if anyone else disagrees?

Incidentally this link should be

http://www.ebay.com/itm/Heuer-Carrera-stahl-1975-/381596272510?hash=item58d8e9077e:g:NVYAAOSwJQdXB9pc

Hope that helps.

Steve

: Hello all,

: Is it possible for a 1975 Heuer Carrera to originally have a
: Caliber 11 movement? I would a Caliber 12 would make more sense
: but seller wont post any more images of movement. It could be
: they honestly dont know the year of the watches production. I'd
: appreciate any feedback, thanks

: Mbarru