it is really hard hard to say on the Graham Hill picture, we could have a look in the BBC film.

Andrew many thanks for actually discovering the image in the first place and posting it.

The Derek Bell the photo was shot prior the availability of the viceroys.
It was an MH bezel version and to my knowledge given to Derek Bell during stunt filming in Le Mans, think it was the watch to have, first automatic chronograph with some cool racing straps...
Derek Bell has lost his watch unfortunately.

Best regards to vienna

Arno

www.heuerchronographs.com

: dear Heuer lovers,
: when i look very, very closely it seems that the distance between
: the numbers on mr. Hill's bezel
: indicates that this might be a tachymeter bezel ... the number
: distance on a MH would be even, wouldn't it?
: also mr. Bell's autavia shown in Arno's fantastic book looks like
: it would have a tachymeter bezel.
: is there a possibilty that these two gentlemen were wearing viceroy
: autavias?
: best wishes from vienna
: Tino