I have this from a story about Madame Cinette Robert. They wrote about there personal history from child until owner from dubey & schaldenbrand
(writen in chronos 3 - 2004). There they wrote, what i told in my post (and also for girad-perregaux). Mathey-Tissot was specialist in realy high value movements at that time. They produced minute repiter and perpetual calender.
But for the raeson, that there is no missunderstanding - i give you the original text (ingerman language)
Stephan
