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6309-589A] Looking for more info on my dad's Seiko. Serial# from 1983, bought in 1985. Can't find it in the Japanese catalogues from 83-85, or anywhere online. Smart looking watch, any ideas
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Deciphering Seiko Case Back Information — Plus9Time
Vintage Seiko World Time - Decoding Seiko Part Numbers, Model and Serial No
Deciphering Seiko Case Back Information — Plus9Time
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How to tell when your Seiko watch was made (Part 1)
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6309-589A] Looking for more info on my dad's Seiko. Serial# from 1983, bought in 1985. Can't find it in the Japanese catalogues from 83-85, or anywhere online. Smart looking watch, any ideas
Vintage Watch How To Find The Manufacture Date of any Seiko Watch Seiko Serial number & More Watch - YouTube
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6309-589A] Looking for more info on my dad's Seiko. Serial# from 1983, bought in 1985. Can't find it in the Japanese catalogues from 83-85, or anywhere online. Smart looking watch, any ideas
Deciphering Seiko Case Back Information — Plus9Time
SEIKO - Serial Number to Manufacture Date Decoder
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Vintage Seiko World Time - Decoding Seiko Part Numbers, Model and Serial No
Deciphering Seiko Case Back Information — Plus9Time
How to tell when your Seiko watch was made (Part 1)