Rare & Important: Officially Certified Chronometer
Citizen Officially Certified Chronometer: Important COSC
Info
ID
EG460054COSCY
Brand
Citizen
Model
Officially Certified Chronometer: Important COSC
Year
1971
Condition
Very good
Delivery
Watch
Movement
Type
Manual
Caliber
0920
Functions
- Time (Hour, Minute, Central Second)
Case
Diameter
34mm
Thickness
10mm
Case
Yellow Gold
Bezel
Yellow Gold
Bracelet
Leather
Dial Color
Silver
Glass
Plexi
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EmailWHY WE LOVE IT? Well, the Seiko Astronomical Observatory Chronometer (ref4520-8020 or ref4580-8020) is a known icon and has its place in the halls of horology for a very good reason. Citizen to my knowledge never participated in the Astro-Obs competition but obviously wanted to demonstrate it is technically on par with many of the Swiss brands as well by an Official Chronometer-Certification.
