This is a 1940's Everard 18K yellow gold 39mm oversized chronograph "UNPOLISHED" (unpolished case). The large chronograph movement Cal.16'''' is equipped with a unique Everard mechanism: a coaxial chrono system operated only by a pusher at 2 o'clock, with a sliding button at 4 o'clock that operates the hacking mechanism while the chronograph is running. In terms of design, the watch has elaborate and intricate silver snails with mirrored circles, which is unique to this era. It is a wonderful gem with the natural taste of a one-owner system.