Seiko Credor 8420-6400 Tank – Veteran Times Int,Seiko Credor VINTAGE 18K Gold Two-tone- Ultra Thin - 8420-5360 for $1,393 for sale from a Private Seller on Chrono24,1984 Credor Seiko 8420-6400 – TokeiMedic,Seiko SEIKO Credor 8420-6400 square stainless steel quartz watch pawn shop [used] | WatchCharts Marketplace,vintage Seiko Credor quartz - 8420-6400- 1980s JDM🇯🇵 ✅️ Available ✅️ Case Size: 16mm Lug Width: 16mm Tank Dial with Snap Case Back DM us or click the link in the post