Vintage and super rare 1920s Eberhard & Co Chronometre Hinged Hermetic 18ct Gold Case Wrist Watch. Thewhite porcelain dial with black numbers, sub seconds and matching hands is signed Chronometre Eberhard & Co swiss made. The 18 jewel manual wind movement is working well but may need a service in order to keep perfect time, fully signed Eberhard & co. The 18ct solid gold 23.5mm wide double hinged case is fully hallmarked and signed in the back JF (Jean Finger Patent 89276), discolouration on case is just tarnish and will polish off, the glass is original and has chips to edges. We have left as purchased from a local collector and truly is a museum grade timepiece.
Swiss patent by Jean Finger, a watch case maker of Longeau, Berne, Switzerland, "Montre a remontoire avec boitier protecteur" (watch winder with protective box) patent number CH 89276 with a priority date of 4 January 1921, published 2 May 1921.