Derek Pratt: Luca Soprana developed a Remontoir d’Egalité Constant Force mechanism with the help of a Reuleaux triangle, which you also find in the Wankel Rotary Engine, this is for me the Best of the Best of Horology all in One. Qian GuoBiao Facing The S

Hello Zenith friends... I wanted to share the new addition of an ElPrimero A386 into my chrono theme. A really nice watch that combines a sporty look, elegant case and joyful colors with the subdials. What a beautiful balance! I now need to have a nice st

Certainly the main topic of the week end. -Movado A waterproof gold case with the M95, a beauty A steel M90 And a little multi scale chronograph -Eberhard A Contodat A beautiful blue scale in this 30CH waterproof, light patina. I put back the Contograf he

Hi, I would for sure choose the 300 SL!... I already have the watch to drive it, Eberhard Contodat, see below Ads from 1957 and pics of the watch...only missing the car!... Matt

Here is a little piece of Chronograph history...Eberhard Contodat, 1957, First chrono with a date... Matt

I think the most obvious for me could be a vintage diver: Eberhard Scafograf 200, 1961 But my latest arrival could fit the bill as well in the future: Eberhard Contodat, first chronograph ever with a date 1957, with just a touch of red! Look at these long

The 60s Eberhard production cited by Tony and others (Scafograf, Scientigraf without to forget the Contograf) are appealing and highly collectible IMO. We could also speak about the Contodat, first chronograph with date, the gold case execution with its t