SEIKO 5 SPORTS Speed Timer 6139-8000 Used

Condition: Used

"Ahead of its time: A captivating blue gradient."

Today, we are pleased to introduce the SEIKO automatic watch, "5 SPORTS Speed Timer, Ref.6139-8000." Equipped with the iconic five core features—shock resistance, automatic winding, date display, day display, and water resistance—this practical timekeeper is a true masterpiece. As one of Seiko's most legendary sports collections, it has captivated enthusiasts through a vast array of historical variations.

This particular model is an automatic chronograph produced in 1970. The dial features a stunning blue gradient, beautifully paired with applied indices and luminous hands. The coloration, which deepens from the center out toward the perimeter, showcases a design aesthetic unique to the 1970s. The central chronograph second hand is finished in high-visibility yellow, creating a sporty yet sophisticated contrast that catches the eye.

The cushion case, measuring 40mm in diameter and 13.5mm in thickness, offers a powerful and robust silhouette that perfectly reflects the design trends of its era. The caseback features a screw-down design with the "WATERPROOF" inscription, a characteristic detail found exclusively on early production models.

The watch is powered by the 21-jewel Cal. 6139A movement. It allows you to appreciate Seiko's pioneering engineering, including the ingenious quick-set day/date mechanism operated by pushing the crown.

While the bracelet has been replaced with an aftermarket Maruman 7-link band, it maintains an authentic vintage look that complements the watch perfectly. Even after half a century, this vibrant blue dial has not lost its luster, exuding a unique presence that cannot be found in modern timepieces. Combining historical significance with exceptional design, this Seiko masterpiece is an absolute must-have for watch collectors.

Description / Condition [Dial, Hands, and Indices] The dial has no major or noticeable damage. The hands, indices, and luminous material show signs of aging and degradation.

[Case and Caseback] The case shows some light scratches, minor scuffs, and small dings from use. The caseback exhibits some opener marks, but the engravings remain sharp and clearly legible.

[Crystal] The crystal has some scuffs, light scratches, and minor chips.

[Bracelet] Fitted with an aftermarket Maruman bracelet. While it shows some light scratches and scuffs, it is ready to wear immediately.

[Operation] The crown is located at the 3 o'clock position. This model does not have a manual hand-winding function.

Quick-set Date: Push the crown lightly.

Quick-set Day: Push the crown further in.

Time Setting: Pull the crown out and turn to adjust the hands.

Chronograph Operation: The upper-right pusher starts and stops the chronograph, and the lower-right pusher resets it.

[Accessories] Watch body only.

Specifications Year / Movement: Manufactured in 1970 / Cal. 6139A Automatic, 21 Jewels

Daily Rate: Runs within ±60 seconds per day (measured over 24 hours)

Lug Width: 19mm

Case Diameter: Approx. 40mm (excluding crown)

Lug-to-Lug: Approx. 44mm

Thickness: Approx. 13.5mm (including crystal)

Wrist Size: Maximum up to approximately 20cm (approx. 7.87 inches)