1974 Seiko 6139-8020 Chronograph automatic brown dial
1974 Seiko 6139-8020 Chronograph automatic brown dial The vintage Seiko automatic chronographs are iconic-historical pieces. They are collectible, beautiful and affordable, generally a Seiko 6138 or 6139 will run you between $100 and $400. The story of the Seiko chronograph begins in 1969 when the first three, automatic chronographs emerged. The Seiko caliber 6139 is […]