Here is another from Watchco (Australia) - - -

It has no numbers between the lugs, but the dial and case are stated to be made by Heuer. It has been fitted with a Heuer movement and Heuer hands.

I share many of Bruce's thoughts and questions from his message yesterday. It is unclear to me:

• when these (Autavia and Silverstone) were made, vintage or modern??
• which case-maker and dial-maker produced them -- supplier to Heuer or someone acting on their own??
• what they were made for -- special order from Heuer, protoypes, rejects or as fakes?? Could they have been made for Heuer, by a legitimate supplier, but never used in anything made by Heuer??

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

: hi amh

: the watchco Silverstone you have directed me to
: does have a genuine cal 11 movement fitted
: as you say. there should be a case reference
: between the lower lugs that should read 110
: 313 and a serial number between the upper
: lugs, but these are missing. the dial, case,
: hands and bracelet seem to all be correct
: apart from this one ommision. marcus at
: watchco has been the source of many of the
: nos Monreal and Autavia case and dial sets
: which are covered by other posts on this
: forum. perhaps this is one of those with a
: movement sourced or from the same casemakers
: consignment made as a prototype?

: whichever way, it would seem not to be a full
: production model.

: why not ask marcus where it comes from?

: bruce