125 Vacheron Constantin A very rare and attractive, chronograph wristwatch in pink gold, pulsometer and respirometer scales dial, with certificate, reference 4072.

Estimate: € 50.000 –⁠ 100.000

Among the great chronograph wristwatches of the 20th century, few are as delicately poised between elegance and purpose as the Vacheron Constantin reference 4072. Produced from 1938 through the late 1960s, it is one of the Geneva maison’s most enduring chronograph designs—spanning three decades of evolving aesthetics and mechanical ingenuity. Offered in a variety of metals over the course of its production, from yellow gold to steel and bi-metallic cases, it is the pink gold examples—like the present one—that are undoubtedly the rarest and most romantic. Measuring 35mm in diameter, the case retains the harmonious proportions and sculptural lugs that distinguish this reference as a creation of mid-century design sophistication. Beneath its glass lies a dial of remarkable distinction: at its center, a rare snail scale forms the focal point of a dial conceived with purpose. Framing it, both pulsometer and respirometer scales gracefully encircle the perimeter. While the pulsometer allows for calculation of heart rate, the respirometer—an exceedingly rare feature—was used to time breaths per minute, marking this as a chronograph designed not only with elegance, but also human life in mind. Inside, the manually wound Vacheron Constantin caliber V434 powers the chronograph functions with a 30-minute counter. Few watches so beautifully marry utility, rarity, and design ethos as this reference 4072. Preserved in outstanding condition and boasting one of the most desirable dial layouts ever mounted on this model, it is a trophy for the connoisseur who seeks the subtle excellence of Vacheron Constantin’s golden age.