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The Seiko reference 6619-7590 is a vintage mid-1960s automatic wristwatch powered by the 6619A movement.
Overview of the Seiko 6619-7590Movement: Seiko caliber 6619A, a 21-jewel automatic workhorse beating at 18,000 bph.Features:
Day and date display. It is historically notable as the first Seiko movement to feature a date quickset mechanism operated by pushing the crown inward.
Note that the day wheel does not have a quickset and must be advanced manually.
Era: Manufactured during the mid-to-late 1960s (typically 1964–1967) under the Sportsmatic or Seiko 5 families.Design:
Typically features classic mid-century stainless steel case styling, an acrylic crystal, and clean applied dial markers.
