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Seiko:

Seiko movement calibres list

Seiko Moeris

Seiko Nation

Seiko Type 100 (Daini Seikosha)

Seiko Type 93 (Daini Seikosha)

Seiko Calibre Type 91 (Daini Seikosha - pocket watch movement, Railway pocket watch)

Seiko Calibre 90 (Daini Seikosha - stop-watch movement)

Seiko Calibre 11A Automatic (AS 1382, Daini Seikosha?, 1955 - First Seiko Automatic)

Seiko Calibre 55 (Suwa Seikosha, 1958.05 - Lord Marvel)

Seiko Calibre 57/560 movement family (Suwa Seikosha, 1959.03-1977 - Crown, Crown Chronograph, Grand Seiko, Lord Marvel)

Seiko Calibre 290/55? (Suwa Seikosha, 1959 - Gyro Marvel)

Seiko Calibre 60 (Daini Seikosha, 1960.02 - Goldfeather)

Seiko Calibre 3140 movement family (Suwa Seikosha, 1960.06 - Liner)

Seiko Calibre 62 movement family (Suwa Seikosha, 1960 - Seikomatic, Seikomatic Self-Dater, Seikomatic Weekdater)

Seiko Calibre 66 movement family (Suwa Seikosha - Sportsman, Sportsmatic, Sportsmatic 5)

Seiko Calibre 44 movement family (Daini Seikosha - King Seiko, King Seiko Chronometer, King Seiko Calendar, Grand Seiko)

Seiko Calibre 76 movement family (Daini Seikosha - Champion 850, Champion Calendar 860, Fairway, Sportsmatic Deluxe, Sportsmatic 5 Deluxe)

Seiko Calibre 83 movement family (Suwa Seikosha, 1963 - Seikomatic slim, Seikomatic slimdate, Seikomatic-R Calendar, Seikomatic-R Weekdater)

Seiko Calibre 89 movement family (Daini Seikosha, 1963.06 - stop-watches): https://www.plus9time.com/blog/2019/7/8/89st-series-luxury-stopwatches

Seiko Calibre 61 movement family (Suwa Seikosha, 1967 - Seiko 5, Grand Seiko)

Seiko Calibre 51 movement family (Daini Seikosha, 1967 - Seikomatic-P/Presmatic)

Seiko Calibre 19 movement family (Daini Seikosha, 1967 - Chronometer, Grand Seiko, Grand Seiko V.F.A.)

Seiko Calibre 56 movement family (Suwa Seikosha, 1967.12-1975.07 - Lord Matic, Lord Matic Calendar, Lord Matic Weekdater, Automatic, King Seiko, King Seiko Calendar, King Seiko Weekdater, Grand Seiko)

Seiko Calibre 88 movement family (Daini Seikosha, 1968-middle - 1977? - stop-watches)

Seiko Calibre 45 movement family (Daini Seikosha, 1968.09 - King Seiko, King Seiko Calendar, Grand Seiko, Grand Seiko Calendar)

Seiko Calibre 52 movement family (Daini Seikosha - Lord Matic Special Weekdater, King Seiko Special Calendar, King Seiko Special Weekdater)

Seiko Switzerland Chronometer Competition Movements: https://www.plus9time.com/seiko-the-neuchtel-chronometer-competition

Source: http://matic6246.web.fc2.com/history/history.html

https://www.tapatalk.com/groups/seikoholicssupportforum/an-old-post-about-caliber-numbers-t381.html

Seiko watch models:

Seiko Super (S, Suwa Seikosha, 1950.07 - 1956?)

Seiko Unique (U, Daini Seikosha, 1955.06 until at least 1960.02)

Seiko Marvel (M, Suwa Seikosha, 1956.06.10)

Seiko Laurel (L, Suwa Seikosha, 1958.09 - 1960.10)

Seiko Cronos (C, Daini Seikosha, 1958.05 - - Seiko Cronos, Seiko Cronos special finish, Seiko Cronos Self Dater, Seiko Cronos Special)

Seiko Lord Marvel (LM, Suwa Seikosha, 1958 - 1977)

Seiko Crown (Suwa Seikosha, 1959.03-1965.12 - Seiko Crown, Seiko Crown Self Dater, Seiko Crown Special, Seiko Crown Chronograph, Seiko Crown Chronograph Calendar)

Seiko Gyro Marvel (GM, Suwa Seikosha, 1959)

Seiko Goldfeather (GF, Daini Seikosha, 1960.02 - 1965?)

Seiko Fairway (Daini Seikosha)

Seikomatic (MA, Suwa Seikosha, 1960.05)

Seiko Liner (LN, Suwa Seikosha, 1960.06 - 1964? - Liner, Liner Chronometer)

Seiko Champion (CH, Daini Seikosha, 1960.09)

Grand Seiko First (GS, Suwa Seikosha, 1960.12)

Seiko Skyliner (SLN, Suwa Seikosha, 1961)

King Seiko First (KS, Daini Seikosha, 1961.07)

Seikomatic Self Dater 394/6205 (MAS, Suwa Seikosha, 1962.03)

Seikomatic Self Dater with Second-Setting 395/6219 (MASK, Suwa Seikosha, 1963.05)

Seikomatic Weekdater (MAW, Suwa Seikosha, 1963.07)

Grand Seiko Self Dater (GSS, GSC, Suwa Seikosha, 1963.08)

Seikomatic slim (MAM, Suwa Seikosha, 1963.08-1963.10)

Seiko Sportsmatic 5 Weekdater (66 S A 5, Suwa Seikosha, 1963.09)

Seiko Sportsmatic 5 Deluxe Calendar (76 S C D, Calibre 7625, Daini Seikosha, 1963?)

Seiko Sportsmatic 5 Deluxe Weekdater (76 5 D, Daini Seikosha, 1963)

Seiko Calibre 89ST Series stop-watches (Daini Seikosha, 1963.06 - 1977)

Seikomatic-P/Presmatic (Daini Seikosha, 1967)

Lord Matic (Suwa Seikosha, 1967.12-1975.07)

Lord Matic Special (Daini Seikosha, )

Source: http://matic6246.web.fc2.com/treasure/treasure.html

http://www.egalizer.hu/targyak/orak/kings.htm

http://www.egalizer.hu/targyak/orak/king1.htm

Seiko case-back markings and serial numbers