Anyone???

: Hi, what (I think) I know so far:

: In the beginning Carrera watches were delivered with unsigned
: crowns. On later Carreras the crowns were signed with Heuer.

: Few questions about that topic:

: - Was the diameter / thickness of the unsigned crowns different
: from the later ones?
: - Had all first ex Carreras the unsigned crowns or changed Heuer
: the crowns during the production time of the first ex?
: - If yes can the beginning of the change be specified by serial
: numbers or production year?
: - Is there a write up on this topic or the sizes of the different
: crowns ( diameter, thickness, tube, stem)?
: - Does someone know a crown (generic or contemporary) which looks
: quite exactely as the original one and could be used for
: replacing an unsigned original crown?

: Please email me to chriswatches@gmx.net or post here

: Any kind of help is highly appreciated, thanks for your time!