History of Seiko (No. 34)

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35 Quartz-Astron†

First quartz watch: Astron released 25 Dec 1969 calibre 35 with hand soldered hybrid integrated circuit featuring 76 transistors and 84 resistors 29 capacitors total 189 elements onto a ceramic substrate. $1,250

Variations†

Based on theory that each month began at number 0001, and only on highest number I have recorded.

36 Series†

Very short lived predecessor to the 39 Series, rectangular with back & forth motor instead of stepping motor, and 2x batteries. Very rare and debatably not even sold to the public.

• Movement no. 000241 signed "Seiko" illustrated in Seiko Sales brochure Jan 1971

  #ref(): File not found: "Seiko-3602-2.jpg" at page "Seiko"

• Movement no. unknown signed Daini Seikosha with text other way up to 000241

  #ref(): File not found: "Seiko-3602-3.jpg" at page "Seiko"

Illustrated in Museum of Japanese Watches book, appears to be two different watches from the front, plus caseback and movement shots.

#ref(): File not found: "Seiko-3602-4.jpg" at page "Seiko"

#ref(): File not found: "Seiko-3602-5.jpg" at page "Seiko"

38 Series Stainless Steel†

First true production quartz watch calibre 3800 series 1971 with in house CMOS IC. Prototype finished April 1971, first watches shipped Nov 1971, 3823 released Dec 1971.

Earliest watch I've seen dated May 1971, latest 1978 (both 3823)

Regarding John Hall. At Intersil, Hoerni, a Swiss native, received venture funding from Swiss watchmaker Omega to develop a wristwatch IC. Though Hoerni and Hall created a successful design, Omega decided not to put it into production. Hoerni went to Japan and received an order for the watch chips from Seiko Chairman Shoji Hattori. Seiko used these chips to create the world's first quartz watch, the “Astron”, in 1969. Hattori, recognizing the potential of this design and future ones, funded Hall's start-up company, Micro Power Systems (MPS), in 1971.

Eight models

3800†

3802 38QTC†

Nine models

3803 38QTW†

3819†

GMT, 2 models

3820†

3822†

3823 38SQW†

VFA 6+ models

3862†

3863†

3870†

3883†

Superior One model

39 series†

3922†

3923†

     

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