Omega Speedmaster Broad Arrow 1957, 42mm, Co-Axial Calibre 3313 Automatic Chronograph, 321.10.42.50.01.001

The OMEGA Speedmaster Broad Arrow 1957 Ref. 321.10.42.50.01.001 pays tribute to the design language of the original 1957 Speedmaster while combining it with modern OMEGA chronograph engineering. Its 42mm stainless steel case features a black dial, signature Broad Arrow hands and a steel tachymeter bezel, creating a distinctive interpretation of the Speedmaster's early motorsport aesthetic. The design takes its strongest visual cue from the Broad Arrow hour and minute hands, a defining feature associated with the earliest Speedmaster. Three chronograph registers maintain the familiar Speedmaster layout, while a date aperture at 6 o'clock adds everyday practicality. Unlike the traditional Moonwatch configuration, this reference uses a sapphire crystal and transparent caseback, giving it a more contemporary character. At its heart is the OMEGA Co-Axial Calibre 3313, a self-winding chronograph movement featuring a column-wheel mechanism and Co-Axial escapement. Offering approximately 52 hours of power reserve, the movement is visible through the exhibition caseback and brings modern automatic performance to the Broad Arrow's heritage-inspired design. Specifications Brand: OMEGA Model: Speedmaster Broad Arrow 1957 Reference: 321.10.42.50.01.001 Movement: OMEGA Co-Axial Calibre 3313 Automatic Chronograph Power Reserve: Approximately 52 Hours Case Material: Stainless Steel Case Size: 42mm Dial: Black Hands: Broad Arrow Hour and Minute Hands Bezel: Stainless Steel Tachymeter Bezel Crystal: Domed Scratch-Resistant Sapphire Crystal with Anti-Reflective Treatment Caseback: Transparent Exhibition Caseback Bracelet: Stainless Steel Bracelet Wrist Size: Fits up to 19cm Water Resistance: 100m / 330ft Functions: Hours, Minutes, Small Seconds, Chronograph, Date, Tachymeter Accessories: Box and Papers Condition: A few traces of usage, some scratches can be seen but overall in very good condition. Availability: Global Concierge Sourcing Service Key Features Calibre 3313 — OMEGA's Co-Axial automatic chronograph combines a column-wheel mechanism with approximately 52 hours of power reserve. 1957-Inspired Design — The distinctive Broad Arrow hands reference the design language of the earliest Speedmaster and give this model its unmistakable identity. 42mm Case — The 42mm stainless steel case delivers familiar Speedmaster proportions with a strong but balanced wrist presence. Steel Tachymeter Bezel — An engraved stainless steel tachymeter bezel reinforces the model's connection to the Speedmaster's original motorsport purpose. Exhibition Caseback — The transparent caseback provides a view of the Co-Axial Calibre 3313, distinguishing the Broad Arrow from the traditional solid-caseback Moonwatch format. The OMEGA Speedmaster Broad Arrow 1957 Ref. 321.10.42.50.01.001 successfully combines early Speedmaster design cues with modern automatic chronograph engineering. Its Broad Arrow hands, steel tachymeter bezel and Co-Axial Calibre 3313 give it a distinctive position within the wider Speedmaster family, complemented by box and papers and availability through our Global Concierge Sourcing Service. "Style is Timeless."