Suwa Seikosha 56 Stream

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BRANDS: Grand Seiko, Seiko, Suwa Seikosha

Production: 1968 – 1976
1910s	1920s	1930s	1940s	1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s

The 5600 family of movements was produced by Suwa Seikosha from 1968 through 1976. It was designed for mechanized production and featured many updated details, including quickset day and date.

Unlike many other contemporary Seiko movements, the 56 series uses a conventional reverser gear for the automatic winding system rather than Seiko’s Magic Lever system.

	Lord Matic 21,600	King Seiko 28,800	Grand Seiko 28,800
No Date	5601A	5621A 5621B	5641A
Date Only	5605A	5625A 5625B	5645A
Day-Date	5606A	5626A 5626B	5646A
Date and GMT	5619A

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