1966 Seiko Chronometer Seikomatic 6245-9000 – TokeiMedic,Seikomatic Chronometer 6246-9000 from 1966 (Serviced with NOS crystal) – Paleh,6246-9000] The Seikomatic Chronometer. A Grand Seiko in all but name. : r/Seiko,1969 Seiko KS Superior Chronometer Officially Certified 45-8010,Seiko Seikomatic Weekdater 1960s Automatic Watch Ref 6218-897 Vintage SV102