Some examples with platinum cases were also produced, much rarer and more expensive than the previous ones. Most of the examples produced feature a case coated with a layer of 14-karat gold that is 80 microns thick (considerably thicker than common gold plating). The choice of the Grand Seiko logoĪfter lengthy debates, the Gothic font was chosen to express Grand Seiko’s respect for the long history of mechanical watchmaking. The claimed accuracy was +12/-3 seconds per day. Manufactured by Suwa Seikosha, it housed the caliber 3180 (later renamed 5720), which combined some characteristics of the movements previously developed by Seiko for the Lord Marvel and the Crown. Seiko’s goal was to create the ideal watch, according to the highest standards of precision, beauty, legibility and durability. ![]() ![]() Introduced in Japan on December 18 of 1960, it was the first Japanese watch to pass the rating of the Bureaux Officiels de Contrôle de la Marche des Montres.
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