Hello!
I'm currently researching the late 60s variations of the 806, in particular the ones with bigger subdials. I don't think there are many? In particular, no boxed 10s, right?
I also came across this one which does not look like anything I saw from reputable sources (WatchFred IG photos and Kurt B website):
https://www.watchclub.com/breitling/nav ... -year-1969Attachment:
watch-club-breitling-navitimer-twin-planes-never-polished-ref-806-year-1968-10148-7-.jpg
The subdials are eating into the markers and the Swiss Made script... Fake, service dial or uncommon variant?