With Vacheron Constantin’s Historiques Cornes de Vache 1955, the world’s oldest continuously operating manufacture advances the art of horology while remaining true to its past. The new timepiece pays tribute to the watchmaker’s first water-resistant and anti-magnetic chronograph—born in the 1950s and carrying the reference number 6087—which has gone on to become one of the three most sought-after models by collectors of the brand.

Named for the same distinctive cow-horn-shaped lugs that graced the original…