1978 Seiko SilverWave Quartz 7546-801A – TokeiMedic,WTS] 1978 Seiko Quart SilverWave Z 7546-7040 Serviced | Excellent Condition | $470 : r/Watchexchange,Seiko Silverwave Z (JDM) [Ref: 7546-7040] Quartz BMBY: December 1978 Case: 38mm Bracelet: fits up to 7 inches Bezel: bi-directional Crown: screw-down Kanji / english day wheel Made in Japan (JDM) All,Seiko Silverwave Z (JDM) [Ref: 7546-7040] Quartz BMBY: December 1978 Case: 38mm Bracelet: fits up to 7 inches Bezel: bi-directional Crown: screw-down Kanji / english day wheel Made in Japan (JDM) All,Seiko 7548-7000 Oct. 1981 | The Watch Site,