Girard-Perregaux 1966 Full Calendar
Presented at the SIHH, the Girard-Perregaux 1966 Full Calendar is based on a GP classic, made with modern materials and techniques. Its 40mm round, pink gold case and white dial displays a full calendar, with date, the day of the week, the month and moon phase.
The day and month are displayed in windows below the twelve o'clock marker; with the day in the left window and the month in the right window. The date is read by a sub-hand located above the six o'clock marker, with the moonphase inside the date ring.
The movement is the GP033M0 designed and built by Girard-Perregaux and features a 46 hour power reserve and 27 jewels. It is displayed through the sapphire glass back. This watch is one model within the GP 1966 series of homage watches, paying tribute to GP's past creations and innovations.
In 1957, Girard-Perregaux released the Gyromatic movement ushering in a new series of small, self-winding movements with highly accurate rates. In 1965, Girard-Perregaux presented a movement oscillating at a frequency of 36,000 vibrations per hour; at a time when most houses could only reach 21,800 vibrations per hour. In 1966, Girard-Perregaux was awarded the Centenary Prize of the Observatory of Neuchâtel for their efforts.
Please see Joel & Kohei's post at Timezone for further information and pics: