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The Tanaka Line

King Seiko 52KS 5246-6000

King Seiko 5246-6000 with a dark dial, day-date window and rounded steel case
King Seiko 52KS · 5246-6000 · November 1972

Black sheep, officially certified

The dark dial concentrates the 6000’s bright elements. Hands, markers, lettering and the day-date frame sit in a deep field, surrounded by that generous polished bezel. The case has the same rounded confidence that draws me to the lighter 5245-6000.

It is generally called a black dial. In strong sunlight I have sometimes seen a very dark blue in it. That is part of the experience of this particular watch, rather than a reason to give it two identities.

A bright perimeter

The bezel reads as a clear ring of light around the dial. Below it, the lugs broaden into rounded shoulders, their brushed upper surfaces contrasting with the polished outer edge. The transition from the circular dial to the strap is unusually full.

On the dark face, the thin minute marks are easy to distinguish from the stronger hour markers. The broad day-date aperture has enough visual weight to balance the lettering without breaking up the centre of the dial.

The watch

Reference5246-6000
My exampleNovember 1972
FamilyKing Seiko 52KS
ManufactureDaini Seikosha
Movement5246A · automatic, day and date
Beat rate28,800 vibrations/hour · 4 Hz
CaseStainless steel
Case width, without crown35.5 mm
Thickness, including crystal9.5 mm

Dimensions measured on this example.

A shared outline

The date-only 5245-6000 and this day-date 5246-6000 belong together visually. Both use the rounded 6000 case language and the prominent bezel. The change in dial colour and calendar display does a great deal to alter their expression.

The lighter watch lets the linen texture occupy the face. Here the dark field puts the edges and reflective elements first. I enjoy having both versions available to test how much of a watch’s character comes from its dial.

King Seiko 5245-6000 with a silver linen dial and a broad polished bezel
5245-6000 · Steel
King Seiko 5246-6000 with a dark dial, day-date window and rounded steel case
5246-6000 · Steel

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