A '71 Seiko 6139-8020 - the watch that got me into vintage Seiko. I bought the watch itself from Argentina and the NOS strap from Saudi Arabia. : r/ Seiko
VINTAGE SEIKO 6139-8029 CHRONOGRAPH STAINLESS MENS WRIST WATCH SERVICED C.1972のeBay公認海外通販|セカイモン
1974 Seiko 6139-7069 Chronograph | DC Vintage Watches
Seiko 6139-6005 Blue "Pogue" Chronograph c.1971 — Buying On Time Vintage Watches
La leggenda del Seiko 6139 - Il magazine di Chrono24