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Hi, I want you to help me to find out from when till when the 66-9990 has been produced.
The youngest I have seen so far is from July '74 (serial 477025).
The oldest I saw was from October '65 (serial 5002846).
Martback reports in one of his old blocks, that he got one from June '62
http://seikoandcitizen.blogspot.com/2006_11_01_archive.html
However, I would like to get a confirmation, if it really has a 7-digit serial (if you could answer Martin?).

For the moment please post, if you came across this model younger than July '74 or older than Oct. '65.

Thanks a lot,

Axel
 
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