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This 1976 Seiko Automatic Chronograph Ref 6139-6012 is available for purchase.
The Details:
The Seiko Chronograph Ref 6139-6012 features a 39mm x 43mm tonneau-shaped stainless steel case with a mineral crystal. The black dial features a tachymeter scale at the outer edge, lumed hour markers, lumed hour and minute hands, a 30-minute counter sub-dial at the 6 o’clock position, an English/Arabic day wheel with a date window at the 3 o’clock position, and a red central chronograph…
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