Seiko "Titanium Sports 100" chronograph [ca. 1983]

  • Movement: quartz Seiko 7A28 chronograph fully-jewelled (15) with all-metal construction.
  • Case: ref# 7A28-7069, titanium, ~39mm Ø.
  • Interesting history behind the 7A28 movement -- it is the FIRST quartz chronograph with analog display and among the FINEST quartz chronograph movements ever produced.
  • This particular model is among the earliest watches ever constructed of titanium and interestingly was only produced by Seiko for 1 year.
  • If you'd like to travel back in time, here's a YouTube video from 1983 showing this watch (pause at 0:10).