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
SEIKO 6139 8020 CHRONOGRAPH ORIGINAL SILVER DIAL 8040T RARE RALLY SPORT BRACELET | WatchCharts
Lot-Art | Seiko - Chronograph - Blue eye - 6139-8020 - Men - 1970-1979
Seiko Chronograph Automatic Ref No. 6139-8020 for $491 for sale from a Seller on Chrono24
Seiko 6139 Chronographs Full List | Vintage Watch Inc
Seiko Sports Model Automatic Chronograph 6139-8020 Rare | Etsy Ireland