OMEGA CIOCCOLATONE REF. 3903 PLATINUM

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, one of which is the present watch. 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.