Dating older seiko 5 serial numbers


07-Dec-2019 07:51

During that period Citizen’s watch production accelerated enormously, particularly with the success in the domestic Japanese market of the ‘Deluxe’ hand winder.

Case design was also developing and other case types were emerging.

6) Serial Number – by 1963 the use of this type of serial number was well established – see later on in the page for information on serial numbers and production dates.

7) This example has no indication of water resistance – watches were increasingly marked ‘Parawater’ after 1958 when Citizen designed water proof cases for the first time.

And not all case backs carried all the markings – some were minimally stamped and very simple whilst some were decorated, often with scrolled engraved lines.

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After looking at a fully marked example, I’ll show some of the variations.The case number is often more useful than the model number, since it usually includes a reference to the movement in the watch.



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