Seiko Seikomatic diashock 20 jewels, Japan. Seikosha cal. 840. Lid: 15007D Japan, EPG 15035 Japan A on the inside. Diameter: 36.5 mm, sunken crown. Crown at 4 o'clock. Used leather strap, length: 19 cm, lug width: 18 mm. With wear and traces of use on the case and a spot on the dial near the 7. The timepiece runs well. A wonderful dress watch from the early 60s. Please view the photos to form your own impression. Service is recommended for daily use, maintenance history is unknown. Watch comes without any accessories. Insured shipping with Track & Trace. Good luck bidding.