Screw caseback Vacheron Constantin was founded in 1755 by Jean-Marc Vacheron in Geneva, Switzerland. This makes it one of the oldest watch manufacturers in the world with an uninterrupted history. Throughout its history, Vacheron Constantin has been responsible for numerous innovations in watchmaking. This includes the development of the world's first engine-turned dials in 1785 and the first non-magnetic timepiece in 1885. Vacheron Constantin is often considered one of the "Holy Trinity" of Swiss watchmaking, alongside Patek Philippe and Audemars Piguet. These three brands are renowned for their exceptional craftsmanship and are considered the pinnacle of luxury watchmaking.