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Seiko 14094 M44 Selfdater

1313 Views 5 Replies 3 Participants Last post by  andrew
Seiko 14094 M44 Selfdater, Need help please guys, need the crystal part number for this model, Need it for another forum member. Thanks in advance Stefan
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Can I ask how it was determined in pre-8-digits-reference-system and in what year current system was introduced?
It's 340W03AN Stefan
ThankQ sir, Its for Andrew, hence the ??
Can I ask how it was determined in pre-8-digits-reference-system and in what year current system was introduced?
It was determined by the model number. The 8 digit system was introduced in 1964 but the old didn't completely disappear until 1965. Here's the page in my casing book I got the information from.

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Thanks a lot for scanning and sharing.
Very valuable information.
Such casing books from 60's are not so easily available.
Thank you.
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