Vintage Seiko Helmet Chronograph Ref. 6139-7100 Men’s Watch 1970. - Model: Helmet Chronograph. - Movement: Automatic. - Movement: cal. 6139B Japan - 17 Jewels. - Case-Size: 40.5mm (without crown). - Lug-to-Lug: 48.7mm. - Strap length 20cm. - DHL Express shipping with tracking number.
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