grand seiko special hi beat 6156 8010 faceted crystalThere are 3 versions of this GS Special and this watch you see here, with a high strength stainless steel (HSS) case and faceted sapphire crystal. Overall good condition. Warranty Completely serviced by Seiko Service Center in February 2019. The case was lightly polished at the service. It comes with 1 year warranty. Specifications Brand: SEIKO Model: GRAND SEIKO Special Hi BEAT Ref: 6156 8010 Serial: 193xxx Year: 1971 Movement: Automatic Cal. 6156A