Ultra Rare Vintage 1967 Seiko Diashock 21J Manual wind watch 6660-7030 | WatchCharts,Genuinely rare Seiko 6660-7030 | 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,✅️✅️✅️ 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 Diashock 6660-7030 21J Manual Wind 1966 Deadstock Vintage Watch SV1212 | eBay