Rare 1974 Citizen Cosmotron 7803 Hi-Beat Electronic JDM Vintage Watch – Lavender Linen Dial, Faceted Crystal & Original Bracelet

Citizen mechanical wristwatch

MADE IN JAPAN

The Citizen Legacy: A Pioneer of Precision
Founded in 1918, Citizen is now one of the largest watch and movement groups in the world. The Japanese brand is known for its highly accurate and reliable Eco-Drive solar-powered watches. The Citizen group owns Bulova, Alpina, Frederique Constant, and Arnold & Son, as well as movement manufacturers Miyota and La Joux-Perret.

🕰️ A Revolution in Horological History: The Citizen Cosmotron Series

Before quartz took full control of the watch market, a brilliant, short-lived era of horology birthed the hybrid electromechanical watch. The Citizen Cosmotron represents the pinnacle of this technological transition. Combining the mechanical soul of a traditional escapement with the flawless precision of a battery-powered transistorized circuit, this series delivered a mesmerizing, perfectly smooth second-hand sweep that purrs at a true high-beat frequency. It is a rare, historically significant milestone highly coveted by vintage Japanese Domestic Market (JDM) enthusiasts.

—————

Description

This outstanding Japanese Domestic Market (JDM) Citizen Cosmotron pairs breathtaking mid-70s geometric architecture with an uncommonly beautiful lavender-to-silver sunburst dial, deeply engraved with a vertical linen pattern. The visual drama is elevated by a factory-original multi-faceted cut glass crystal that catches and splits the light at every angle. It comes completely original, fitted with its unique, highly sought-after block-style multi-link stainless steel bracelet and signed Citizen Cosmotron clasp.

Under the hood lies the premium gold-finished variant of the Caliber 7803A movement, vibrating at a blazing 36,000 beats per hour. It boasts two of Citizen’s most inventive complications: first, the gravity-defying calendar quickset (holding the watch upright changes the date when pressing the crown, while turning it upside down changes the dual Kanji/English day wheel). Second, it features a unique time-synchronization button at 8 o’clock that instantly flies the sweeping second hand back to zero for split-second synchronization with time signals.

Technical Details

• Brand: Citizen

• Model: Cosmotron Electronic

• Reference Number: 7803-790499 TA

• Movement Caliber: 7803A (Gilded, transistorized electronic balance wheel)

• Jewels: 8 Jewels

• Frequency: 36,000 bph (Hi-Beat)

• Case Size: 38 mm (excluding crown)

• Lug-to-Lug: 42 mm

• Lug Width: 18 mm

• Case Material: Stainless Steel

• Crystal: Factory Multi-Faceted Cut Glass

• Bracelet Material: Original Stainless Steel (Block Link)

• Calendar: Day/Date window at 3 o’clock (Dual Language Kanji/English)

• Complications: Gravity-based push-crown quickset, 8:00 zero-reset sync pusher

• Country of Manufacture: Japan

Watch went through a complete service by a professional watch tech and keeps good time.

Comes complete with original steel bracelet*.

(*)Note: Stock bracelets are often shortened by previous owners and may not fit you(see bracelet size in the product images). We recommend adding a new Citizen lug width matched leather strap with your order.

Why Collectors Seek This Specific Cosmotron

• The Transition Era Hybrid: It captures a rare, short-lived moment in horology when mechanical balance wheels were powered by transistors, bridging the gap between traditional mainsprings and modern quartz.

• Liquid-Smooth 36,000 BPH Sweep: Running at 10 beats per second ($36,000\text{ vph}$), the second hand glides across the dial with a mesmerizing fluid motion rarely seen in battery-powered timepieces.

• The Gravity-Defying Quickset: It features one of watchmaking’s most unique complications—pushing the crown changes the date when held upright, and changes the day (Kanji/English) when flipped upside down.

• Prismatic Faceted Glass Crystal: A rare vintage aesthetic accent; the architectural cut crystal creates beautiful geometric reflections across the textured dial that are impossible to replicate with flat modern glass.

• Exquisite Lavender Linen Dial: Moving far beyond typical flat painted dials, the heavily textured vertical brushing combined with the subtle lavender-silver gradient makes this one of the most artistically expressive references in the Cosmotron family.

• 8 O’Clock Chrono-Sync Pusher: A delightful purely mechanical complication; hitting the secondary button instantly snaps the running second hand back to 12 o’clock for spot-on time setting.

Modes of payment:

• PayPal
• Credit Cards (VISA, MasterCard, American Express, Discover)

We guarantee that the item in this ad looks and works as advertised and offer money back guarantee on this.

The Spirit of Innovation: The Citizen Legacy
Founded in 1918 with the mission of creating timepieces that are “Citizens” of the world, the Citizen Watch Company has spent over a century redefining the boundaries of horology. From its origins as the Shokosha Watch Research Institute, the brand has remained steadfast in its philosophy: “Better Starts Now.” This belief—that it is always possible to make something better—transformed a local Japanese workshop into a global powerhouse of precision and craft. By controlling the entire manufacturing process in-house, from the individual components to the final assembly, Citizen ensures an uncompromising standard of quality that few manufacturers on earth can match.
What truly sets Citizen apart is its relentless pursuit of pioneering technology paired with environmental consciousness. The brand made history by introducing the world’s first light-powered watch, the Eco-Drive, which eliminated the need for battery replacements and forever changed the industry’s approach to sustainability. Beyond its eco-friendly milestones, Citizen’s history is decorated with “world firsts,” including the first professional diving watch with an electronic depth sensor and the most accurate satellite-synchronized timekeeping systems. When you wear a Citizen, you aren’t just wearing a watch; you are wearing a piece of history engineered for the future.
Why Choose Citizen?

• In-House Excellence: Every movement is manufactured vertically within their own Japanese facilities.
• Eco-Drive Technology: Powered by any light source, ensuring your watch never stops and never needs a battery.
• Heritage of Firsts: A century-long track record of technical breakthroughs in durability and precision.