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 Mens Seiko Chronograph 6139-8020 Automatic 38mm Wrist Watch Japan Made | eBay
Tribute to the Seiko 6139-8020 Chronograph Automatic Watch | Strapcode