Citizen Cosmotron 4-790642 Y (1975)

Now available at auction from Second Vintage This sought-after Citizen Cosmotron represents a fascinating era of transitional horology, driven by an electro-mechanical balance wheel movement. Preserved in highly attractive condition, the watch features a striking blue dial with a distinct vertical brushed texture and is fitted with its original signed bracelet, making it a compelling discovery for enthusiasts of 1970s watchmaking. Brand: Citizen Model: Cosmotron Reference Number: 4-790642 Y Serial Number: 50102318 Movement: Electro-mechanical Caliber 7804A Dial: Blue with vertical brushed texture and applied faceted indices Case Size: 38mm (excluding the crown) Case Material: Stainless steel Production Year: 1975 Condition: Good vintage condition. Dial and Hands The vibrant blue dial is exceptionally well-preserved, defined by a striking vertical brushed texture that catches the light beautifully. It features applied faceted indices and logos that add depth to the display, alongside a framed day and date window positioned at three o'clock. The dial surface remains clean with no visible staining or damage. The polished baton hands, complete with central lume strips, match the dial's excellent condition, showing a clean finish with no visible oxidation or corrosion. Case and Crystal The stainless steel case retains its brushed and polished finishes, presenting honest vintage character with appropriate wear. Light surface scratches are visible on the polished flanks, while the edges remain generally well-defined. The smooth polished bezel, cleanly integrated into the case design, shows light surface scratches consistent with the rest of the watch. A recessed crown is positioned at four o'clock, complemented by a pusher located at eight o'clock. The flat crystal remains clear, with no significant scratches, chips, or crazing visible. Movement Inside is the Citizen Caliber 7804A, a fascinating electro-mechanical movement that utilizes a traditional balance wheel powered by a battery. The movement displays clean plates and bridges with no visible corrosion. Engravings reading CITIZEN, 8 J. JAPAN, and 7804A are clearly presented on the caliber. Strap The watch is fitted with its original signed multi-link stainless steel bracelet. It shows normal wear and light scratches consistent with its age. The clasp is clearly signed with CITIZEN and the Cosmotron logo. The bracelet accommodates a maximum wrist size of 18cm. Condition Good vintage condition. The watch displays honest, age-appropriate wear with light scratches across the stainless steel case and integrated bezel, while retaining well-defined edges. The striking blue textured dial and polished hands are exceptionally well-preserved and free of visible damage. The original signed bracelet remains in good order, and the electro-mechanical movement presents cleanly. Dimensions The case measures 38mm in diameter, excluding the crown. Remarks This Citizen Cosmotron offers a highly attractive combination of a vibrant textured dial and original integrated styling. Powered by an intriguing transitional caliber, it represents a compelling piece of 1970s watchmaking. History In the 1970s, the watch industry was in a period of rapid technological transition. Before quartz technology completely dominated the market, brands experimented with electro-mechanical movements that combined traditional balance wheels with battery power. The Citizen Cosmotron is a prime example of this brief but fascinating era. Today, these models are sought-after by collectors who appreciate the unique transitional technology and the bold design language that characterized the decade. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind. We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination. Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age. We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description. The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use. If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you. As with all used watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: CIT-CXX-0006