====== Grand Seiko 61GS ======
The **61GS** was the flagship [[Grand Seiko]] model from [[1968]] until [[1975]]. Produced by [[Suwa Seikosha]] for [[Seiko]], the 61GS with its [[Hi-Beat]] movement upstaged the dowdy [[Grand Seiko 62GS]], then just over 2 years old. That model was quickly phased out, along with the [[Grand Seiko 57GS]] which had continued in production from 1963. This made the 61GS the key model in a 3-watch Grand Seiko line, along with the hand-wound Daini-produced [[Grand Seiko 45GS]] and ladies' [[Grand Seiko 19GS]].

Unlike the 62GS, which had a flush-mounted crown at 4 00, the 61GS returned to a more traditional "GS" marked crown at 3 00. One reason for this new crown is that the new [[Seiko 6100]] movement could be hand wound.

It featured a "Seiko Style" case influenced by the 44GS but with day and date windows as options. Powered by the [[Seiko 6100]] movement, the 61GS boasted accuracy and technical excellence that rivaled the best Swiss watches. The 61GS remained in production until 1975, when the advent of quartz watches threatened the high-end mechanical watch market. In 1974 and 1975, only the "V.F.A." models remained available.

===== Versions =====
"Very Fine Adjusted" ("V.F.A.") models boasted accuracy of one minute per month for the first two years of ownership.

There were seven 61GS models 

  * 6145A (1968-1970) - GS standard official approval, date only
  * 6146A (1968-1970) - GS standard official approval, day/date
  * 6185A (1969-1972) - V.F.A., date only
  * 6155A (1970-1973) - GS Special standard official approval, date only
  * 6156A (1970-1973) - GS Special standard official approval, day/date
  * 6185B (1972?-1975?) - V.F.A., date only
  * 6186B (1972-1975) - V.F.A., day/date

===== See Also =====
  * [[Grand Seiko]]
  * [[Seiko]]

===== External Links =====
  * [[http://www.seiyajapan.com/pages/the-history-of-grand-seiko|The History of Grand Seiko]]
  * [[http://timekeeper.co.nz/viewtopic.php?f=10&t=333|Grand Seiko 61GS (6145-8000) "HI-BEAT 36000"]]


<WRAP ud ud_mod>

**Movement:**
  * [[Self-winding]] movement [[Seiko 6100]]
  * 25 [[jewels]]

**Case:**
  * [[Stainless steel]] with gold plating

**Dial:**
  * White
  * Applied indexes

**Functions:**
  * 61x5 - Hours, minutes, [[central seconds]], date
  * 61x6 - Hours, minutes, [[central seconds]], day, date
</WRAP>

{{tag>Watch_models Seiko_models Grand_Seiko_models}}