Seiko 5 6319-8020 Vintage Men's Watch, 1977

A smooth cobalt blue dial distinguishes this 1977 Seiko 5 from the sunburst-finished blue variants. Reference 6319-8020 retains its original steel bracelet, reference B138, and automatic caliber 6319. The rounded tonneau-like case measures 39 mm across, with a short 40 mm lug-to-lug span and a recorded 23 cm wrist fit.

Even cobalt blue and silver batons

The dial has a smooth, non-sunburst surface, giving the cobalt color an even appearance. Applied silver-tone baton hour markers stand out against it, along with the applied Seiko logo and Seiko 5 shield. A framed day-date aperture at 3 o’clock adds the calendar without breaking the spare central layout.

Automatic 21 Jewels is printed on the dial, identifying the mechanical display. Slim silver-tone baton hour and minute hands match the markers, while a thin central seconds hand maintains the light, linear treatment. The uniform blue background lets these silver details remain the focal points.

Rounded steel case and B138 bracelet

Integrated-style lugs flow from the softly rounded, tonneau-inspired steel case of this vintage Seiko watch into its original bracelet. Brushed upper surfaces contrast with polished bezel and side transitions, separating its broad top from the edges.

Its 39 mm width is close to the 40 mm full lug span. That relationship gives a different wrist footprint from a narrower case with long projecting lugs, and makes both measurements useful for comparison. The bracelet attachment is 19 mm wide.

The original stainless steel bracelet is reference B138, with a brushed finish and signed Seiko clasp. Its recorded wrist fit is 23 cm. The bracelet follows the case’s wider visual stance, retaining the complete steel pairing rather than introducing a new strap.

The original Seiko crown sits at 3 o’clock. It has a modest, discreet profile and a knurled edge for grip during setting.

21-jewel caliber 6319 and serviced condition

Seiko caliber 6319 is a 21-jewel automatic movement powering hours, minutes, central seconds, day and date. The movement identity and jewel indication are consistent with the dial printing.

The watch is used, with excellent overall presentation. Its watch components, crown and B138 bracelet are original. It is fully serviced and fully operational, with a 12-month warranty included. Worldwide shipping is available.