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Well just recently acquired an older Seiko with sub seconds. I am trying to estimate its age and possibly the movement and model number. Numbers on case back: 521671 then underneath 9004.

Any help would be appreciated. Pics below.
Thanks


 

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wow..never seen this one before...love it...you got a great looking watch...looks older for sure...i would say 40's maybe older...i am sure someone here must know..
 

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Well just recently acquired an older Seiko with sub seconds. I am trying to estimate its age and possibly the movement and model number. Numbers on case back: 521671 then underneath 9004.

Any help would be appreciated. Pics below.
Thanks


I saw that one for sale but passed on it due to its size! It's teeny, tiny at only 29mm
 

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My best guess would be that this is from the 1930's or 40's.

It will be a Morisu type 8,9 or 10 movement but I can not tell this from the case back. If you can get a movement shot I should be able to give you a little more information.

I have a slightly earlier Navy watch with a similar movement design.

 

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wow...that is amazing too....
 
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