Started As Frères Baume in 1830 in Geneva, by brothers Louis-Victor and Célestin Baume, the model later on partnered with Paul Mercier in 1918, turning into the Baume & Mercier we know today. Through a very demanding period of time for the brand name, Baume & Mercier joined the Richemont https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/