Vacheron Constantin. Fascinating and Attractive, Round Shaped Chronograph Wristwatch in Yellow Gold, With Fancy Lugs, Reference 4178 Model: Chronograph Reference: 4178 Case Material: Yellow Gold Bracelet Material: Leather Strap Year: 1950s Movement: Automatic Caliber: 434 Case N°: 278171 Movement N°: 431410 Dimensions: 36 mm Signed: Dial, Case and Movement Immediately recognizable thanks to its gorgeous and inimitable teardrop lugs, the 4178 is also considered one of the most beautiful chronograph watches ever made by Vacheron Constantin powered by the caliber 492. Launched in 1940 and in production until 1964, Vacheron Constantin’s reference 4178 was designed to measure short periods of time, such as pulsations, or for events captured by tachymeter and telemeter scales. It existed with oval-shaped chronograph buttons or with the better known, rectangular variant, the bezel was either beveled or flat. The present example has a three body yellow-gold case with snap on back, rounded band and square pushers in great conditions with sharp edges. The two-tone silver dial presents baton indexes and Roman numerals, subsidiary seconds and 30-minute register dials spreading a big charm. Estimate € 10000 - 20000