This is a fully working seiko twin quartz from the SQ series with the rare Royal Oak style gold plated case. Reference 9723-8010. 36mm wide. Fitted on a 18 mm black leather strap. I couldn’t find this model elsewhere after searching. Truly rare piece. Produced from July 1979 to July 1989. It’s in great condition for a watch of this age it shows just expected age related signs of marks/fading Please see my similar watches listed
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