Seiko 7A38 - by the numbers

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Forum Home > In the beginning there was Seiko Quartz - the World's First .... > Seiko 4633 Series Quartz (Daini)

donwatch
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Posts: 568

Seiko SQ  4004  (Type II in Japan )  from Aug. 1977      :)

June 4, 2016 at 10:25 PM Flag Quote & Reply

selfdater
Member
Posts: 59

How do you rate the 46xx movements, Don? I've been ignoring these (and 41xx, 43xx, 75xx, 78xx) and concentrating only on 38xx, 39xx, 08xx, 09xx, 48xx, 58xx as well as the later twin quartz movements (99xx, 92xx, 97xx, 96xx, 94xx). 

June 5, 2016 at 2:49 PM Flag Quote & Reply

donwatch
Member
Posts: 568

Lindon, good question. I think they are a middle grade with two jewels, metal gear box and trimmer pot.  I think the Daini 46xx came out in 1976-7 after the Suwa 09xx series.    I have three and now will ckeck them for accuracy, and report back.    Photo lifted off internet.  :P      

June 6, 2016 at 12:40 PM Flag Quote & Reply

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