Really fascinating info. I'm humbled by the in-depth knowledge on this forum, especially your posts Mark.

Stewart

: Cheers Stewart.

: Now, that is interesting. Definitely an 1163 now I can see
: the pics bigger than on an unzoomed iPhone!

: They're using the banking, so it's 1969 at the latest. Plus Jo's
: pictured with the number 4 908, rather than the number 8 917 of
: 1970 or the number 1 917 of 1971, so again 1969.

: So it seems pretty conclusive that Jo's using a pre-production
: model at Monza, which could explain away the MH bezel. And
: perhaps Heuer traded him that for a production model later on.
: Or Smokin' Jo sold it, maybe more likely! Goes to show there was
: a good relationship there already. At that point, Jack Heuer
: hadn't even had the discussion with Willy Breitling over the
: names on the dial, so I guess it must be that prototype
: configuration on the dial that we see in the press release
: material.

: The lowest Autavia Chronomatic serial I've seen was in the 141100s;
: I wonder if this dial configuration was in the low 141000s, or
: even if the prototype cases were numbered at all.