Seiko Automatic Chronograph 'Bullhead' Archived inner hidden tag — this

inner hidden tag — this cap has all the details found on your next favorite hat

W" and their Mark XI aviator's watches) are enduring examples of reliable tool watches that are as beautiful as they are reliable

introduced in 1963

this one mercifully escaped wear and tear with the coating mostly intact

Seiko Automatic Chronograph 'Bullhead' Archived inner hidden tag — thisThough the Swiss often get all the glory for producing the first automatic chronograph in 1969, Seiko quietly released the Calibre 6139 a rugged automatic chronograph unit as early as May of the same year. In 1970, it made a few tweaks, adding an hour totalizer and a new quickset system, and released the Calibre 6138. Like its predecessor, the 6138 could be found in a number of unique dial and case configurations that have maintained collector