Seiko Crown Diashock 21 Jewels – frühe 1960er – Tropical Dial – technischer Urahn der Grand Seiko Quarz in der Seiko die Quarztechnologie

in der Seiko die Quarztechnologie in ein massentaugliches Segment überführte – unmittelbar nach den hochpreisigen Astron- und 38SQ-Modellen

manual winding capability and a power reserve of approx

Case Length: 44 mm

The so-called “second setting” mechanism was not a gimmick

– Bidirectional winding

Seiko Crown Diashock 21 Jewels – frühe 1960er – Tropical Dial – technischer Urahn der Grand Seiko Quarz in der Seiko die QuarztechnologieA significant piece of early Japanese watchmaking: a Seiko Crown "Diashock 21 Jewels" from the early 1960s with a beautifully aged, genuine Tropical Dial and historically, the direct predecessor to the first Grand Seiko. The Crown Foundation of the Grand Seiko: Introduced in 1959 by Suwa Seikosha as an elegant, high end dress watch, the Crown built upon the Marvel but brought significant advancements with the Caliber 560: a larger balance for better