Seiko 'Helmet' Chronograph automatic stainless steel gentlem...

Seiko 'Helmet' Chronograph automatic stainless steel gentleman's wristwatch, reference no. 6139-7100, serial no. 5D7xxx, circa 1975, circular white dial with applied baton markers, minute markers, inner five minute divisions, day/date apertures, subsidiary thirty minute recording dial, black chronograph centre seconds and inner bezel with tachymeter scale, signed cal. 6139B 17 jewel movement, modern black nylon strap, 41mm

Estimate:£200

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