Yes it is. Adam figured it was 6636 as well. Great to know.
Cheers
7206 in good condition is quite rare, my understanding is 6636 in good condition is on quite a different level. You have a very special combo there. Is the watch from the same time as well?
Christopher Ward C900 Harrison Mono Pusher Chronograph (Calibre JJ02). 250 numbered pieces made of the C900 before it was slightly redesigned and became the C9.