1979 King Quartz,
the end of Single Quartz Movement.
This belongs to the final year of the Seiko King Quartz lineup equipped with a single quartz, the catalog year is believed to be 1979.
This 5856-8010 is listed in the Seiko Catalog in Japan, as top of the line in the King Quartz series. A cream-colored dial in a not-so-common 8000 case. Production year is 1978, made for distribution in 1979.
After that year, Seiko had came out with a full lineup with a series of new movement. Highlighting their new technology breakthrough, the Twin Quartz, which brought accuracy to a whole new level. We'll talk about that later.
