John, Your response to this op is well reasoned and insightful, as usual. Real world experience has shown us that cross caliber comparisons based on amplitude alone are very difficult indeed. You and I have seen very stable modern movements with relatively low amplitude, ie 270' in 5 positions, and

It's come to my attention that Dufour's Simplicity is based on a vintage JLC calibre. I have this information on good authority. Do any of you know the whole story? ===== Added to Editor's Pick -Anthony This message has been edited by AnthonyTsai on 2007-12-02 11:06:27

They can supply the proper Bezel. Very tough to procure anywhere else.