Great questions you are asking, and congratulations on acquiring one of these Carreras.

No doubt, we can provide a lot of information and answers, but we will do a lot better if you can tell us the serial number (or at least the first two or three digits).

Below, you can see what the serial number looks like on a Carrera.

Jeff

+++++++++++++++++++++++++++

: I've just purchased an early Carrera 2447N and would like to try to
: narrow down the production date (without trying to open it up).
: I can't seem to find a good online resource that really goes
: into the details of the Carrera, and I was wondering about a few
: things.

: First off, my watch has the narrow double-hash mark at the 12
: o'clock position; from what I've been able to gather this seems
: to indicate that it's an early model. Is this true?

: Secondly, the crown on my model does not have the Heuer logo on it.
: It's not a hex caseback model though.

: Finally, in the chronograph hours register (at 6 o'clock) there's a
: little T above the lettering "Swiss" - I wondered if
: this could narrow it down, as there are many photos of 2447
: Carreras on the internet without this T.

: Any help (or links!) would be greatly appreciated!