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1978 Seiko Grand Quartz twin quartz movement with snowflake dial. Model reference 9943-8020 - YouTube
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Seiko Grand Quartz 9943-8010 en venta por 407 353 chil$ por parte de un Vendedor privado de Chrono24
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Seiko Grand Twin Quartz 9943-8030, an underappreciated technological marvel. | Seiko watches, Seiko, Accessories
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![Horology & History på Twitter: "The very first 'Grand Seiko' quartz was the Grand Quartz. Pictured is the Seiko Grand Quartz 9943-7000 ref. QGB080 #GrandQuartz #GrandSeiko #WOTD Credit: The Watch Site user Horology & History på Twitter: "The very first 'Grand Seiko' quartz was the Grand Quartz. Pictured is the Seiko Grand Quartz 9943-7000 ref. QGB080 #GrandQuartz #GrandSeiko #WOTD Credit: The Watch Site user](https://pbs.twimg.com/media/EzelqChWEAI_g0o.jpg)