Seiko Vintage “Autodator” Ref. 1748Model: Seiko Autodator Ref. 1748 Year: August 1953 Features: The History. The Seiko Autodator was produced in 1953 and represents one of Seikos early examples with date functionality. It took only a year for Seiko to fall in line with Swiss conventions, releasing the Self Dator in 1954 with a classic 3 oclock date window. But for one glorious year, Seiko found inspiration in the JLC Memovox, and got creative with a unique date disc design that has