1977 Seiko King Quartz "Pepsi" Watch

A rare and highly collectible example of Seiko’s high-end "Quartz Revolution" era. This King Quartz (Reference 5856-8050) represents the pinnacle of late-70s Japanese horology, featuring a high-precision movement housed in a premium gold-capped case, Pepsi-Cola logo. 

Brand: Seiko

​Line: King Quartz (High-End Sub-brand)

​Reference: 5856-8050

​Serial Number: 7N0105

​Production Date: November 1977

​Case Material: G CAP GOLD (Gold Capped). This is a thick layer of gold bonded to a stainless steel core, significantly more durable and valuable than standard gold plating.

​Movement: Caliber 5856 "Twin Quartz" High-Accuracy Movement. Includes the "Double Honeycomb" logo on the dial, signifying superior precision.

​Complications: Day/Date window at 3 o'clock (featuring English/Kanji day wheel).

​Case Features: External battery hatch for easy maintenance.

Dial: Champagne/Gold sunburst texture with applied baton indices. Features the vintage Pepsi "Globe" logo at the 9 o'clock position. The dial remains in crisp, original condition with no visible "foxing" or moisture damage.

​Strap: 18mm Tapered Lizard Grain Leather in Chestnut/Cognac brown. This reptile-texture style is era-appropriate for the 1970s "Executive" aesthetic and complements the thin, dressy profile of the case.

​Dimensions: Approximately 35-36mm case diameter (excluding crown), a classic vintage dress watch size.

#seiko #Pepsi -Cola #logo #vintage #gold #watc

Sold: $525

Date: 05/11/2026

Website: Twenty Four Hour Mall

5/11 Edited to

... Read moreAs a longtime watch enthusiast, I appreciate how the 1977 Seiko King Quartz 'Pepsi' stands out among vintage timepieces from the Quartz Revolution era. The thick gold-capped case not only offers a luxurious look but also enhanced durability compared to typical gold plating, which means this watch will maintain its appearance over decades of wear. The Twin Quartz Caliber 5856 movement, notable for its superior accuracy symbolized by the Double Honeycomb logo, truly exemplified Seiko's technical advancements of the late 1970s. The Pepsi Globe logo on the dial adds a distinctive charm and nostalgia factor, making this watch a conversation starter and a prized collectible. Its champagne sunburst dial paired with the 18mm tapered lizard grain leather strap complements the executive style typical of that era, balancing sophistication and subtlety. The inclusion of an external battery hatch is a thoughtful feature for ease of maintenance, which is sometimes overlooked in vintage watches. I've found that watches like this Seiko King Quartz are not only horological treasures but also versatile fashion accessories that can be worn daily or reserved for special occasions. For collectors, preserving the original dial condition — with no foxing or moisture damage — greatly increases its desirability and value. Overall, investing in this model provides both historic significance and stylish practicality, reflecting a unique blend of Japanese watchmaking excellence and mid-century design aesthetics.

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