... we find a lot of versions under various brands. i listed the different features (minute counter, no digits, digits,
minute counter hand, bezel, case...), but this means not, that a watch with typical early type features must had been
produced early. for example your breguet type xx seems to be a early one, but also we find watches from for example "Sinn", that looks
the same in all/most aspects. Helmut Sinn bought a lot of parts later, so that he produced these watches end of 60thies
(let produce them from Mathey-Tissot). one thing is clear: a watch with "early features" also can be produced later,
but a watch with "later features", can not be from early/earliest production in the timeline. at least my "transitional" classification also only based on the features - really not easy regards Stephan