Ultra Rare Vintage 1967 Seiko Diashock 21J Manual wind watch 6660-7030 | WatchCharts,FS- Seiko 6660-7030 - $100US plus postage | Wrist Sushi - A Japanese Watch Forum,✅️✅️✅️ NOS ✅️✅️✅️ Seiko 6660 - 7030 Hand winding 18000 beat Prod : October 1966 Size : 35.5 mm (No crown ) Great conditions. NOS unused Rare model with unique design and,Seiko PDP 6660-7030 – Turgay's Watches,✅️✅️✅️ NOS ✅️✅️✅️ Seiko 6660 - 7030 Hand winding 18000 beat Prod : October 1966 Size : 35.5 mm (No crown ) Great conditions. NOS unused Rare model with unique design and