Omega Speedmaster

About this reference

The Omega Speedmaster reference CK2998-4 was produced between 1961 and 1962, representing a transitional phase in the early history of the model. Collectors prioritize this reference for its 39.7mm straight-lug case, "Alpha" style hands, and the manual-wind Calibre 321 movement. This specific sub-reference is distinguished by its "Base 1000" or "Tachymètre" bezel and the introduction of the "drop-straight" chronograph seconds hand, which replaced the earlier lollipop style. As a pre-Professional model without crown guards, it occupies a specific niche in the evolution toward the moon-watch configuration. On the secondary market, prices typically range from $25,000 to $50,000 depending on the integrity of the "Dot Over Ninety" bezel and dial patina. A notable production detail is that the CK2998 series was the first Omega worn in space by astronaut Wally Schirra during the Mercury-Atlas 8 mission.