Hi Brook - the general consesus from this forum has been that these C serial numbers stamped into the back cases indicates a watch that was originally sold inside Switzerland. There is some speculation as to why, for tax purposes or on consignment order to certain outlets. But i can tell you that it goes across the Heuer range. We have seen similar stamped back cases on manual and auto Monaco's, auto Carrera's and auto Autavia's. ( I have an auto Siffert with a stamped c number )
Now a 2447 Carrera !
Does anyone want to add another model Heuer the above list ?
All the best - Darren -
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: Would like to know if Heuer ever put "C 1313-5" on the
: outside of casebacks of s/n 69xxx vintage.
: If they did, what did this signify.
: Could not find any pictures or references.
: Thanks for the feedback.