Thomas Prescher Central Perpetual Calendar QP1

At Basel world 2009, Thomas Prescher will be presenting their latest creation: Central Perpetual Calendar QP1. The new central perpetual calendar features five hands from the center show, time, month, date and day. Calendar indications are instantly changing at 12pm. The mechanism is completely in house made and developed.

Technical details
Functions
Perpetual calendar
Central indication of all calendar data
Instantly changing indications
Indication of leap year
Indications : Hours-Index; Date -1-31; Minutes-Index; Month-Index; Day -1-7; Leap Year-Window at 6 o’clock

Movement
Diameter: 34.3 mm, including module for 39mm case
Height: 6.85 mm, including module
Winding: Automatic
Power reserve: 36 hours
Number of jewels: 25 bearing jewels
Frequency: 28800 beats per hour (4Hz)
Escapement: Swiss lever escapement
Balance spring: Flat hairspring
Shock protection: Incabloc
Decoration: Completely hand-engraved and gold-plated
Rotor: 18-karat gold, completely hand-engrave.

Case, dial and strap
Case material: 18-karat gold or PT950
Diameter: 39mm or 43mm
Height : ca.13 mm
Glass-front: Domed sapphire glass
Caseback: Flat sapphire glass
Dial material: To the client’s wishes
Hands: To the client’s wishes
Index: Plates18-karat gold
Name: Plate18-karat gold
Strap: Hand-cut and –sewn alligator skin uppers and lowers
Buckle: 18-karat gold or PT 950

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