This truly rare example of an hermetic watch will be of great interest to the serious collector.
An hermetic watch is design dating from the early 20th century that had the properties of protecting a watch completely from the elements. Unlike modern watches that use special gaskets and high accuracy engineering, the hermetic design achieved its goal by enclosing the complete watch in an outer case that could be screwed closed. To wind or set the watch, the outer cover is removed and the watch, enclosed in its inner cover swings out to allow access to the winder / setting mechanism.
Outer Case: 33.5mm diametr excluding lugs. Screw on front cover. The lugs are fixed and require an open ended strap - a new one has been fitted. All metal case parts are fully hallmarked to 1923 with the Swiss "Canard" mark indicating a fineness of .925.
Inner Case: 26mm silver cased with pop off inner case back.
Movement: 15j "RECO" hand wound movement. Currently keeping time well. The movement will receive a final QA check and service prior to dispatch.