These informations were mostly gathered through my own experience, from watches I actually had in hands. They reflect what I observed and are not the holy truth. Page updated June, 14th 2026 : Seiko KS 4502-7001 steel added.
Text & Pictures : D. Broglin – Watch & Vintage
This is an attempt to list all King Seiko models and their variations. Work in progress of course !
King Seiko 1st generation (1961-1963)
J14102E
King Seiko 44KS (1964-1968)
44, 4402 & 4420 movements
44-2000
2000 RAD dial
AGF (All Gold Filled) case
2 types of crown
44-2000, 1964
44-9990 KSK
36.5 x 44.2 mm
9990R AD dial
1964-1968
4402-8000 KSSK
8000R AD dial
Late model from 1968
“King Seiko” bigger
King Seiko 45KS (1968-1973)
45, 4502 & 4420 movements
45KSC
7000 case
7000T AD dial
45KSC
7001 case
36.2 x 41.1 mm
7000T AD dial
Gold plated
SS case, 1971
7010 case
8000 case
8010 case
King Seiko 52KS (1970-1975)
5245, 5246 & 5256 movements
5000 case
5000T dial
Black dial, 1972
6000 case
6000R dial
1971
Black dial
1971
7000 case
8010 case
7000S dial
screwed back
1975
1971
King Seiko 56KS (1968-1975)
5621 movement – time only
7000 case
monobloc
36.3 x 41.2 mm
7000T dial
7010T dial
acrylic crystal
1968-1972
black 7010 dial
7021 case
7022 case
screw back
36.3 x 41.2 mm
7030T dial
hardlex crystal
1974
5625 & 5626 movements, which had the same cases
5020 case
5030 case
5040 case
6000 case
6010 case
6020 case
1972
Stainless steel bracelet
1972
7000 case
37.2 x 41.7 mm
monobloc
7000T dial
7020T dial
1968-1971
1970
7020 dial
1969
7010 case
monobloc
7010T AD dial
1968-1971
7020 case
7030 case
7040 case
monobloc
7040T dial
Chronometer Officially Certified
7050 case
7060 case
monobloc
7060T dial
Chronometer Officially Certified
7070 case
monobloc
7070T dial
Gold capped case
7080 case
monobloc
7080T dial
7090 case
7070T dial
Chronometer Officially Certified
7100 case
7100T dial
Chronometer Officially Certified
7110 case
7110R dial
7110T dial
7130T dial
Monobloc
1971-1972
7130T dial
1971
7111 case
SS, SGP or GCAP
7110R, 7110T dials
Screw back
1972-1973
Gold plated
7113 case
7110R dial
Screw back
1974
1974
7120 case
7121 case
7070T dial
Screw back
1972-1973
Black dial
7200 case
1974
8000 case
8000T dial
Screw back
Pressed crystal
Crown not signed
1974
8001 case
8000T dial
Screw back
Pressed crystal
Crown not signed
1975
8010 case
8010T dial
Screw back
Pressed crystal
Crown not signed
1975
8011 case
8010T dial
Screw back
Pressed crystal
Crown not signed
1975
Seiko KS Vanac (1971-1975)
5626 movement
5050 case
5070T dial
Facetted crystal
Black dial
7160 case
7160T dial
Facetted crystal
Green dial
Special, 5246 & 5256 movements
5000 case
5000R dial
35.3 x 39.3 mm
Facetted crystal
Green dial