I recently came across this watch which has three signatures on it including Frederick Nicoud, but I believe it was made by Charles Jacot. I'll start with the movement which is why I became interested in it. It is clearly the Charles Jacot style but it has a helical balance spring which I had not seen before in one of these. It is also signed by Jules Coulomb and Co. They are not mentioned in Pritchard, but earlier Coulombs are; so it is a watchmaking family. The balance is very nice with what appear to be platinum timing screws. The escapement is not special in that it has a "flat escape wheel and I have not taken the balance out to check the roller and safety. The wheel is polished steel and very light. The movement shots are taken through a crystal over the movement and pressing the crown lifts the back of the watch to show the movement. It get more "interesting on the dial side. The dial is signed Kaneda (also not mentioned in Pritchard) with a serial number that matches the movement . The dial is the canister type and has cuts to accommodate a setting system I have not seen before. The lever at 1 o'clock locks the setting train . the lever at 12 releases it. I had ot take the dial off to learn this but it works very nicely. I had though the dial was a replacement but canister dials are had to do and this is a double sunk in keeping with the US nomenclature on the movement. The watch is settable with the front bezel closed. The case has three marks one of which is the Neuchatel sliver mark My searches have not come up with anything like this but I did find that this board has very few Nichoud watches but my searches hav show watches under his name from several different makers. I believe the case and dial are original. I suspect the hands are replacements because they are not well fit and Jacot/Salzman watches almost always have two tone, gold, steel-tipped hands. The case is very complicated and a good fit and I believe original. The Nicoud I did find with a similar serial number was dated late 1870's and that looks reasonable for this example. I'd love to learn more about any of these three signatures. The watch is unusual in three ways: 1) Three signatures 2) Helical Balance Spring 3) Two part setting I have not seen one like it but perhaps others have.