Seiko Chronometers

Grand Seiko First (Suwa Seikosha)

Grand Seiko Self Dater/Calendar (Suwa Seikosha)

Seiko Liner Chronometer (Suwa Seikosha)

King Seiko 44KS Chronometer (Daini Seikosha)

Seikomatic Chronometer (Suwa Seikosha)

1944B (Daini Seikosha)

King Seiko 45KS Chronometer Officially Certified (Daini Seikosha, 45-8010, 4502-8010)

King Seiko 56KS Chronometer Officially Certified (Suwa Seikosha)

Seiko Automatic Chronometer Officially Certified (5625, 5626) (Suwa Seikosha)

King Seiko Special 52KS Automatic Chronometer Officially Certified (Daini Seikosha, 5245, 5246)