Omega Speedmaster `57 watch 331.

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Omega Speedmaster `57 watch (331. Caliber 9300 Co-Axial chronometer automatic movement. Central chronograph hand, small 60-minute & 12-hour counter on 1 dial at the 3 o`clock position, and small seconds counter at the 9 o`clock position. Black dial with index hour markers, and date window at the 6 o’clock position. Stainless steel bezel stamped with Tachymeter scale set on a 42mm stainless steel case. Scratch resistant sapphire crystal on top with dual anti-reflective treatment on both sides, and exhibition case back. Water resistant to 100M. Stainless steel bracelet with double folding deployment clasp.

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