Black Dial with Ring For SEIKO Jumbo 6138-3002 6138-3003 6138-3000 613 – A parts
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