Twin Quartz: A Seiko Grand Quartz 9943-8000 from June 1978 | Adventures in Amateur Watch Fettling,WTS] Vintage Seiko Grand Quartz – 9940-8000 – Patina Dial – Twin Quartz – 1970's Japan ––––– $333 USD ONLY !!!!! (Price is Negotiable) – WatchPatrol,SEIKO(セイコー)時計買取専門店ローレル,楽天市場】ルミノックス ナイトホーク 6402 ブラックナイトの通販