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Rare Vintage Casio Cosmo Phase CGW-50 Men’s Digital Astronomy Sports Watch JDM
■ ONE OF A KIND — THIS IS THE ONLY ONE. ONCE IT SELLS, THIS PAGE BECOMES AN ARCHIVE.
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► SELLER'S DESCRIPTION
Up for sale is an ultra rare and highly desirable Casio Cosmo Phase CGW-50 men’s digital astronomy sports watch, powered by Module 830 and produced for the Japan Domestic Market (JDM) in the 1980s. This model is one of Casio’s most collectible vintage digital pieces, featuring the iconic cosmic/astronomy phase display with functionality spanning the years 1901 through 2200.
The watch is in full working condition, with all features and functions operating properly. It is fitted with an aftermarket replacement strap, as the original has deteriorated from age. All other parts of the watch are original.
The watch has visible signs of use and age, but the photos best describe its physical condition and should be reviewed carefully by interested buyers.
Key Details:
• Brand: Casio
• Model: Cosmo Phase CGW-50
• Module: 830
• Era: 1980s
• Origin: Japan Domestic Market (JDM)
• Features: Astronomy/cosmic phase display (1901–2200), calendar, digital timekeeping, alarm, stopwatch, 100m water resistance
• Case Material: Resin with stainless steel back
• Strap: Aftermarket replacement strap
• Condition: Full working condition; signs of use and age—see photos
This is an ultra rare Casio collector’s piece, seldom seen in working condition and highly sought after for its distinctive Module 830 astronomy display. A must-have for serious vintage Casio collectors.
Ships carefully and securely.
Feel free to message me with any questions.
► MANUAL ARCHIVECasio module 830 manual PDFs
► ARCHIVE FILE: CASIO — BRAND HISTORY
Casio brought an electronics company's imagination to the wrist, moving from calculators to the calendar-equipped Casiotron in 1974. G-Shock toughness, Databank utility, and affordable icons such as the F-91W turned the company into a digital-watch giant whose early modules and resin-cased designs are now a distinct collecting field.
Read the full Casio story — and shop all Casio watches ►► RELATED TIMEPIECES DETECTED (4)
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