OMEGA “CIOCCOLATONE” PLATINUM REF. 3903 1950's

Model Reference Year Movement No. Calibre Case No. Material Buckle Dimensions Dial Signature Notes Description Omega “Cioccolatone” 3903 Circa 1950 11509201 Omega 342 – automatic “bumper” 10815442 Platinum 18k white gold Omega buckle 33 x 33 mm Silver with baguette diamond hour markers On dial, case, and movement The reference 3903 is most commonly found in stainless steel, with precious metal versions being extremely rare. This platinum example is of outstanding rarity: only two similar platinum specimens are known to exist today. According to the Omega Archives, this watch was delivered to Curaçao on June 28, 1950. The case remains beautifully preserved, retaining its original geometry and bearing two crisp hallmarks. Known among collectors as the “Cioccolatone” for its softly rounded, chocolate-like square case, the Omega Ref. 3903 epitomizes mid-century Swiss elegance. The sharp yet fluid contours of the 33 mm case express the refined design language of the 1950s, while inside beats the Omega calibre 342, an early automatic “bumper” movement representing a milestone in the brand’s technical evolution. While the 3903 reference was produced almost exclusively in stainless steel, this particular watch is crafted in platinum, making it one of the rarest variants ever made — one of only two known examples. The silvered dial with baguette diamond hour markers enhances its exclusivity and lends it a discreet, timeless luxury. Completed by its 18k white gold Omega buckle, this platinum “Cioccolatone” stands as a true collector’s piece — an exceptional example of Omega’s craftsmanship and design heritage, appearing on the market only on the rarest occasions.