GRAND SEIKO 57GS Chronometer 5722-9990 – 1965
The 57GS, developed by Suwa Seikosha, is the first Grand Seiko watch family, introduced in late 1960 with the Grand Seiko Chronometer, now commonly known as the Grand Seiko First.
The Grand Seiko 57GS family consists of the following movements:
Caliber 3180, later renamed 5720A, with an accuracy of +12 to -3 seconds per day, 18,000 revolutions per minute and 45 hours of power reserve.
Caliber 430, later renamed 5722A, also ran at 18,000 revolutions per minute and 45 hours of power reserve and introduced the first date complication in a Grand Seiko watch.
The Caliber 5722B, an improved version of the 5722A, runs at 19,800 a/h for greater accuracy.
By the time Seiko renamed its movements in the mid-1960s, the caliber 3180 had already been phased out of production. For this reason, all existing examples bear the 3180 inscription, although the name was changed to 5720A.
For the caliber 430, on the other hand, the last produced examples bear the inscription 5720A.
Grand Seiko Self-Dater/Calendar
Introduced in 1963, this watch was the first Grand Seiko to feature a date complication equipped with Seiko’s proprietary fast-forward mechanism. The watch also guaranteed a water resistance of 50 meters (5 atm).
In addition, the Self-Dater was the first Grand Seiko with a Zaratsu polish on the case surface.
Caliber 5722A, originally called 430, runs at 18,000 a/h, while the later, improved version 5722B provides higher accuracy at 19,800 a/h.
Light signs of wear on the case, nicely shaped hands and a brushed cream sunburst dial.
The crystal has been replaced with a genuine Seiko vintage NOS crystal from Japan. The old original crystal is still included with the watch as a spare. They are very hard to find!
The watch is from about 1965
- High quality Watchurbia watch box
- certificate incl. photos
- service report
- warranty certificate
36.7 mm measured without crown
*You can find the warranty conditions under this LINK
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