GRAND SEIKO Ref.5646-7010 – TIMEANAGRAM,SEIKO Grand Seiko 5646-7010 High beat day date Automatic Men's Watch_834189,Seiko GS Grand Seiko Hi-beat Automatic Day Date 5646-7010 Men 1970's Vintage Collection Watch,gift for Fathers,rare Collection Timepieces - Etsy Hong Kong,JA-2176| 56GS グランドセイコー 5646-7010 SS GSメダリオン SEIKOベルト・尾錠仕様 8,Grand Seiko GS Hi-Beat 5646-7010, 1973 | Watch & Vintage