I have read about the Gallet chronograph before, but I haven't been able to find a single picture of him wearing it.
It is a cool story.

: This Gallet watch was apparently worn by Clark in 1965 when it was
: given away to a mechanic at Indy. The photo we have been
: discussing is from 1967, so he obviously didn't have that watch
: at that time. But I thought it was interesting to know about
: another Clark watch.
: http://galletwatches.homestead.com/gallet_watch_jim_clark.html