Heritage Revived: The Omega Speedmaster Broad Arrow 1957 (Ref: 321.10.42.50.01.001)

March 25, 2026

The Omega Speedmaster Broad Arrow 1957 is a masterful tribute to the original 1957 Speedmaster, blending vintage aesthetics with modern horological precision. This Ref: 321.10.42.50.01.001 stands out with its iconic "Broad Arrow" hands and tachymeter bezel, making it a highly sought-after piece for collectors who appreciate Swiss-made luxury and history.

Engineering Excellence and Technical Specifications

This timepiece features a robust 40mm stainless steel case that provides a perfect balance of presence and comfort. Protected by a scratch-resistant sapphire glass, the deep black dial houses the legendary automatic movement.

Feature	Specification
Reference Number	321.10.42.50.01.001
Case Size	40mm × 48mm
Thickness	14mm
Movement	Automatic Chronograph
Weight	168g
Wrist Size	Up to 19.8cm

Grade AB Condition: Meticulously Maintained

At RYBrandshop, we prioritize honesty in our assessments. This Speedmaster is rated as Grade AB (Excellent Condition). To ensure its longevity, it has been professionally polished and ultrasonic cleaned.

Dial & Hands: Beautiful and pristine (綺麗) condition.
Crystal: Perfectly clear sapphire glass.
Case & Bezel: Shows minor dents on the case and very small chips on the bezel edge (打痕小、欠け小).
Clasp: Features minor dents consistent with respectful daily use.
Bracelet: In beautiful condition, currently accommodating a large wrist size up to 19.8cm.

Chronometer-Grade Precision

Beyond its looks, this Broad Arrow delivers elite performance. Our professional technical testing reveals an incredible accuracy of +6 seconds per day, falling within the highest chronometer standards. With a strong amplitude of 317° and a minimal 0.3 ms beat error, the mechanical heart is in peak health.

View high-resolution condition photos and the detailed grade report below.
Check our professional technical inspection and accuracy results below.

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View Omega Speedmaster Broad Arrow 1957 Inventory

*Unique piece. Chronometer precision (+6s/d). Available until sold out.

The Collector's Full Set

For the discerning investor, provenance is everything. This watch is offered as a Full Set, ensuring its long-term value and absolute authenticity.

What’s Included:

Genuine Omega outer and inner luxury boxes
Original Warranty card
Official Instruction Guidebook
Spare bracelet link

Experience the 1957 heritage today with a timepiece that is ready for another lifetime of precision. Shop with confidence at RYBrandshop, where we specialize in bringing you the best of Japan's curated luxury inventory.