An expert antique watch renovator sold me cheaply a fine carefully serviced Matile pivoted detent escapement 1860? original except for case exact duplicate of a Jules Jurgensen of similar age. My regard for the fine old J.J. watches has been diminished lately. A friend has 1880+ repeater 15530 with split second chronograph. Buried under chrono parts is a complete LeCoultre repeater, not just parts. I have one which may be a real J.J. repeater 14204 made with parts from Audemars. The Matile movement even looks better finished than the valuable J.J. Wonder who made it? Read Nardin designed the pivoted detent for this one.