Seiko Serial Numbers with Production Dates and Movement Types
How is the Date Calculated The first digit of the serial number tells you the last digit of the year the watch was made. For many of Seiko’s movements we…
Seiko
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Seiko Group Corporation, commonly known as Seiko is a Japanese maker of watches, clocks, electronic devices, semiconductors, jewelry, and optical products. Founded in 1881 by Kintarō Hattori in Tokyo, Seiko introduced one of the first quartz watches and the first quartz watch with a chronograph complication. Seiko was a wristwatch manufacturer for Japanese soldiers during World War II.