Worldrecord-Thin: 1mm Citizen Quartz, Rare & Important
Citizen Ultra-Thin Quartz: WorldRecord 1mm, Rare & Important
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EmailWHY WE LOVE IT: It is the late 1970s local minimum in watchmakings most important complication: miniaturisation; it is the first movement with a thickness of less than 1mm: a ultra-thin watch; it is the 1978 Richard Mille RM-UP01: horological important & rare.
A Citizen presented in 1978 and the worlds first watch-movement with a height of less than one millimeter: 0.98mm to be precise and thus a #horologicalMileStone. Rare and important and very expensive back then.
This example was made 1979 in 18K whitegold and is thus even rarer than the more common yellowgold variant, as we know that not more than 20% were made from whitegold in this era.
The condition appears to be unpolished and very good with the crystal flawless, the case with some minor scratches and the dial with some signs of age and time from oxidation. The movement cal790 is running fine, reliable and precise.