24/06/2026
Vintage Seiko Sportsmatic 5
Ref. 418970
Ca. 1964 Mar
Clean silver sunburst dial, dual icons on top of Seiko Sportsmatic and below 21 jewels.
More classic appeal with less indexes only at 6, 9, 12
day-date window at 3
Water Proof
Diashock 21 Jewels
The same production year to Tokyo Olympic games.
The small symbol above the Seiko Sportsmatic text is the “S” whirl / stylized emblem used by Seiko in the 1960s.
The shape resembles a curved “S” or swirl, sometimes described by collectors as a “seagull-like” or “vortex” symbol.
It is a visual identity mark for Seiko’s automatic dress/sport watches of that period.
Cal. 410 / 21-jewels automatic
Crown at 4 o'clock
"STP" engraving on inner case back, which stands for "Suwa Topped Parts" Suwa Seikosha factory of Seiko.
Engraving as a gift to honor the person