Seiko Automatic Chronograph 6139-8020 Full Original 1973 Model - Etsy Hong Kong
Seiko Chronograph Automatic 6139-8020 Vintage Circa 1972 for $1,067 for sale from a Trusted Seller on Chrono24
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