Seiko - " JUMBO" automatic chronograph - 6138-3002 very rare - Men - 1970-1979 - Catawiki
1973 Seiko 6138-3002 "Jumbo" Chronograph
Thomas' Timepieces - Seiko 6138-3000 and 6138-3002, both models often referred to as the Seiko Jumbo. The Seiko 6138 was arguably the world's first automatic chronograph (Zenith/Movado El Primo also claimed to
Seiko 6138-3003 Jumbo Automatic Chronograph Full Original Very - Etsy | Vintage watches, Seiko, Chronograph