Citizen Cosmostar V2 women's automatic wristwatch (Ref. 4-660439-K, Cal. 6600) (January 1972)

Automatic | 21 Jewels | Para Water | Japan 1970s

This elegant Citizen Cosmostar V2 dates from the early 1970s and exemplifies Citizen's technological precision and formal clarity of that era. The model was listed in Japan with the reference 4-660439-K and, according to the original catalog, cost ¥14,000 , placing it in the upper middle range of Citizen's automatic watch line at the time.

The distinctive silver-grey sunburst dial displays a subtle metallic shimmer depending on the light, giving the watch an impressive presence despite its compact dimensions. The classic day-date window at 3 o'clock blends harmoniously into the clean design of the 1970s.

The stainless steel case bears the engraving “PARA WATER” , Citizen’s early designation for water resistance, and is equipped with the automatic caliber 6600 – a robust, finely regulated movement with 21 jewels and a frequency of 28,800 A/h .

Technical data

• Model: Citizen Cosmostar V2
• Reference: 4-660439-K
• Caliber: 6600 – Automatic, 21 Jewels, 28,800 A/h
• Production date: January 1972
• Housing material: Stainless steel ( Stainless Steel GN-4W-S )
• Dial: Silver-grey with sunburst finish, applied indices
• Display: Hour, minute, second, day of the week / date
• Waterproof rating: "Para Water" (splash-proof)
• Diameter: 25.7 mm
• Lug-to-lug: approx. 30 mm
• Height: 11.3 mm
• Lug width: 12 mm
• Bracelet: Original Citizen stainless steel bracelet with folding clasp
• Weight (including strap): 49 g

Condition

• Well-preserved original condition with slight signs of wear, fully functioning automatic movement and clear engraving.
• Mineral glass with noticeable scratches.
• The dial is original, the hands are sharp and still shine in a fine metallic tone.
• The strap features the raised CITIZEN logo on the clasp.

Historical background

The Cosmostar series was introduced in the early 1970s as a further development of the Citizen Crystal line and was intended to represent a modern, compact automatic watch line for the Japanese market. The caliber 6600 used was characterized by its smooth running, fine regulation, and slim design.

Citizen set early standards for everyday water resistance with its Para Water technology (introduced in 1959). The Cosmostar V2 was part of that generation that combined style with technical reliability – an emblem of Japanese engineering in the early 1970s.

Warranty (used)

This is a used item. The limitation period for claims based on defects (statutory warranty) is 12 months from delivery .

Notice

Since this is a historical, used watch, water resistance cannot be guaranteed.
To protect the clock mechanism, the clock should not come into contact with water or moisture.