This Jaeger LeCoultre for Van Cleef & Arpels Pop Up Pendant Watch is an exceptionally rare and refined creation that perfectly blends haute horlogerie with high jewelry design. Crafted in 18k yellow gold and measuring 2.4 by 3.6 centimeters, the piece features an ingenious invisible slide mechanism that allows the hidden watch to elegantly “pop up” from its pendant form. The design captures the discreet luxury and technical creativity that defined mid-century collaborations between Jaeger LeCoultre and Van Cleef & Arpels. The case is preserved in very good overall condition, showing sharp lines, beautifully finished surfaces, and crisp hallmarks that attest to its originality and quality. Highly sought after and rarely encountered, this Pop Up Pendant Watch represents a fascinating intersection of mechanical innovation and Parisian jewelry artistry, making it a true collectible from two of the most prestigious names in watchmaking and design.