The first King Seiko came out in 1961 as reference J14102. Seiko describes it as having sharp, angular hands, solid applied indexes and a slim-looking case. It ran on a manual-winding movement with 25 jewels, and the dial is signed “Diashock 25 Jewels”. A dealer listing for one example gives a 35 mm case, 9.5 mm thick, with 18 mm between the lugs. That case is 14k gold-filled, and the dealer says the gold layer is 100 microns thick. The same listing names the calibre as 5646A, but other sources give different calibre numbers. The silver sunburst dial has faceted gold-tone markers and no lume. At launch it cost between ¥12,000 and ¥15,000, which Seiko says was about a university graduate’s average starting salary at the time. That put it firmly in the luxury segment.

Seiko calls Daini Seikosha’s Kameido factory in Tokyo “the birthplace of King Seiko”. At the time the group’s high-end watchmaking was split between Daini Seikosha and Suwa Seikosha in Nagano. Suwa had launched Grand Seiko the year before, and King Seiko was Daini’s answer to it. Seiko presents Grand Seiko as the pursuit of precision and King Seiko as a more modern, design-led watch with Tokyo roots. The 1961 model was followed by the KSK in 1965, which added hacking seconds, larger lugs and sharper case lines. The 45KCM of 1969 brought a 36,000 vph high-beat movement, and the colourful VANAC line arrived in 1972. With the rise of quartz, King Seiko production ended in the 1970s.

Collectors value the J14102 as the watch that started the King Seiko line and the Daini side of the rivalry with Grand Seiko. Dealers point to its thick gold-filled case and the sharp, faceted hands and indexes. Vintage examples come up regularly in Japanese dealer stock and at auction. The line’s later revival was well received: Time+Tide ranked the 2021 KSK re-creation (ref. SJE083) among its top reviews of the year. WatchesBySJX called that re-creation faithfully executed, though it noted that the modern automatic movement needed a few tweaks. The original J14102 is no longer produced. Seiko relaunched King Seiko as a regular collection in 2022, based on the 1965 KSK rather than the first model.