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Ap0407
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Username: Ap0407

Post Number: 2
Registered: 01-2011

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Posted on Friday, January 21, 2011 - 09:28 am:   

I inherited this Seiko watch and was able to find online that it is from 1977. The back has 7559-6010 engraved along with 9n1570 as the serial number. I have been unable to locate a value?
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Zaf
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Username: Zaf

Post Number: 5048
Registered: 05-2003

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Posted on Thursday, January 27, 2011 - 08:37 am:   

I don't know of this one, sorry.
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Gatorcpa
Intermediate Member
Username: Gatorcpa

Post Number: 111
Registered: 11-2006

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Posted on Thursday, January 27, 2011 - 02:34 pm:   

The watch was made in November 1979. Dating any Seiko is easy, so long as you know the decade when it was made.

First digit is the last digit in the year: "9" = 1969, 1979, etc.

Second digit is the month: 1=Jan, 2=Feb ... letter O=Oct, N=Nov, and D=Dec.

The rest is just a serial number.

There is an article on this particular model here:

http://www.thewatchsite.com/index.php?topic=8393.0

Hope this helps,
gatorcpa