*seiko advan automatic cuz Automatic movement 6309-5020 * 17 jewels * Day/date display * Stainless-steel case * Original-style integrated bracelet * Likely from the 1970s, although the exact production date requires the serial number from the case back.
*seiko advan automatic cuz Automatic movement 6309-5020 * 17 jewels * Day/date display * Stainless-steel case * Original-style integrated bracelet * Likely from the 1970s, although the exact production date requires the serial number from the case back.