Seiko Panda, Ref. 6138-8020, Cal. 6138, Men’s Chronograph Vintage Watch, 1977 Oris The Certina Argonaut is a

The Certina Argonaut is a classic diver's watch that was first introduced in the 1960s

The company continued to grow throughout the first half of the 20th century

The case is crafted from chrome-plated steel with slightly rounded lugs and a polished top surface

creating a robust look that suits the diver-inspired design

Seiko Panda, Ref. 6138-8020, Cal. 6138, Men’s Chronograph Vintage Watch, 1977 Oris The Certina Argonaut is aVintage Seiko Panda Chronograph Vintage Watch from 1977, men's stainless steel timepiece powered by the automatic Cal. 6138 movement. Featuring a refined panda dial with contrasting blue sub dials and tachymeter scale, this collectible watch is fully serviced and for sale in excellent condition. Seiko Panda 1977 First impression 6138 8020 The Seiko Panda 6138 8020 from 1977 is one of the most iconic automatic chronographs produced by the Japanese