This vintage Rolex Bubble Back ref. 2940 “Chronomètre” is a classic example of early Rolex innovation, dating to the 1940s. It features a 32 mm stainless steel and yellow gold case with the iconic domed “bubble back” profile, designed to house the self-winding movement. The original dial, in a warm silver tone, displays elegant applied hour markers and retains a refined vintage patina. Powered by a Rolex automatic chronometer-certified movement, it reflects the brand’s early pursuit of precision and reliability. Compact yet distinctive, this timepiece embodies timeless design and historical significance, making it a highly collectible watch.