Thanks for that info, Mark

: More like 1967 for that batch of Carreras Bryce, though dating
: pretty much any Heuer is an imprecise science and I'd always
: allow at least 6 months either way.

: It's all done from precedent, whether that be sales documentation,
: engravings, known model introductions or whatever. Note that we
: don't have the luxury of archives that Omega, Rolex, PP etc
: collectors do but a few years of spadework have produced a few
: fairly extensive spreadsheets and databases amongst collectors.
: The sample size doing it like this will only ever be a fraction
: of production though, so the dates shouldn't be taken as gospel
: - they are effectively our (collective) best guess with the info
: to hand.