WTS] 1978 Seiko Quartz SilverWave Z 7546-7040 | Excellent Condition | $450 : r/Watchexchange,The Overdue Review! SEIKO 7546-7040 JDM Silverwave, Sept ‘78,Lego Hidden Side 70418 J.B.'s Ghost Lab - Lego Speed Build Review,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