There were large and small subdialed Navitimers in the 60's, so it's possible the pre-Navitimer models also had both sizes.
Excellent, particularly the first one - I love the faded red tachymeter. I find these very challenging to collect because the generic movement makes hanky-panky easy on the part of franken-masters. It takes an experienced eye, which you obviously have. I have a particular soft spot for the ref 769s, the first run of Chronomats, which I believe are the first slide-rule watches. If I may be permitted...
![[IMG]](proxy.php?image=http%3A%2F%2Fi829.photobucket.com%2Falbums%2Fzz218%2FLouRLS%2FBreitling%2520Chronomat%2FcDSC_0024-1.jpg&hash=1d9cd149d096f348f9e790eeaf711b0e)