cheers stew
yes the serial number range interestingly is very tight, i think they dropped the wording chronomatic on the dial in favour of automatic chronograph in early 1970

Glen

: Great watch !

: Great to get your serial number- your serial no makes mine only 200
: away from a Chronomatic dial. Oh man....

: We're narrowing these early one's down to quite a tight serial
: range. It seems the change dropping Chronomatic from the dial
: happened sometime between these two serial ranges.

: Also, seeing paintless wonders one can see why Heuer progressed
: onto a matt blue, and thus quite differently finished dial.

: Cheers

: Stew.