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Girard Perregaux

Girard Perregaux 1966 Annual Calendar Equation Of Time 49538-52-231-bk6a

Girard Perregaux 1966 Annual Calendar Equation Of Time 49538-52-231-bk6a


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Condition New/Unworn
Case Shape Round
Case Dimensions 40mm
Case Thickness 10.72mm
Case Material 18kt Rose Gold
Dial Color Grey
Crystal Scratch Resistant Sapphire
Screw-in Crown No
Water Resistance
No rating Does not allow contact with water
30m/99ft - 50m/165ft Allows for contact with water such as washing hands and rain
50m/165ft - 100m/330ft Allows for light poolside swimming
100m/330ft - 200m/660ft Allows for swimming, snorkeling and showering (do not expose to hot water)
200m/660ft - 500m/1650ft Allows for impact water sports such as board diving and scuba diving
500m/1650ft + Appropriate for serious deep water diving.

Learn more about Water Resistance.

Case Back Transparent
Band Material Alligator/Crocodile Leather
Color/Finish Black
Clasp Tang Buckle
Movement Automatic
Complications Annual Calendar, Equation Of Time
  • Polished 18kt rose gold case.
  • Grey dial with a combination of applied rose gold & white printed index hour markers.
  • Polished rose gold "leaf shaped" hour & minute hands.
  • Steel complication hands.
  • Small seconds sub-dial located at the 9 o'clock position.
  • Annual Calendar Complication:
    • Date sub-dial displayed between the 1 & 3 o'clock positions.
    • Month display via elongated aperture (window) located between the 6 & 8 o'clock positions.
  • Equation Of Time:
    • EOT indicator displayed between the 3 & 6 o'clock positions.
    • An Equation Of Time (aka EOT) complication indicates the difference between "true" solar time (that of nature) and "mean" solar time (that of man). As the earth orbits around the sun in an elliptical (oval) shape & the axis is tilted - there are only 4 days a year when the day is exactly 24 hours long April 15th, June 14th, September 1st and December 24th. All other days of the year the days are shorter or longer - depending in the position of the earth. This watch will show the difference between the "mean" time & the "true" time. Since the of the days are fixed year after year (at the same location) a watch can be manufactured to replicate the correction via a shaped cam which elongates & shortens the days accordingly.
  • GP Caliber GP03300-0010, beats at 28,800 vph, contains 44 Jewels & has an approximate Power reserve of 46 hours.

Alternate model # 4953852231bk6a

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