background image

5

4

B908.XX.U.AI   1   10.12.13   08:59

B908.XX.U.AI   1   10.12.13   08:59

B908.XX.U - 2.AI   1   10.12.13   08:59

B908.XX.U - 3.AI   1   10.12.13   09:00

 

The second crown, located at 9 o’clock, has only one position and is used to scroll through the lunisolar 
calendar in both directions. In other words, it moves the hand, which has a sun-shaped end, to a cho-
sen date on the outer concentric zone of the dial in which the 12 months of the year are indicated and 
the days of the month symbolised by two rows of indices, (the inner zone shows the odd dates and the 
outer zone the even dates) The SunMoon mechanism directly calculates the position of the other hand 
showing the lunar indications.

3. MoVeMenT IndIcATIonS

Unlike the Antikythera Mechanism, there is no indication on the underside (back). 

 

All of the indications are found on the dial side

At the front, pivoting at the centre of the movement, is the Moon hand which shows two indications :

a.

 The Moon phases are shown by 

this hand in a circular window, with the 
extended end of the Moon hand indi-
cating in the first concentric circle the 
sidereal position of the Moon as viewed 
from the earth (the wearer of the watch).

deScRIPTIon oF THe MoVeMenT And ITS oPeRATIon 

1.  BASIc MoVeMenT

Hand wound mechanical movement equipped with a flying tourbillon (without ball bearing) rotating 
once every minute to indicate the seconds. Hours and minutes shown by traditional hands at the centre 
of the movement on the dial side.
 

· The power reserve is approximately 100 hrs.

 

· The operating frequency 21,600 Vib/h (3 Hz)

 

· The bridges and main plate are made from bevelled brass with a drawn edge, circular-grained 

 

  recesses and a black ruthenium surface treatment.

 

·  The wheels are circular-grained, bevelled and rhodium-plated.

 

· The steel is satin-finished and bevelled with a drawn edge.

 

·  number of components : 295

 

· number of jewels : 37

2. cRownS

The movement features two winding crowns : one at 3 o’clock and one at 9 o’clock. The crown at 3 
o’clock is for winding and time setting. Its first position (A) is used to wind the movement’s mainspring, 
while the second position (B) allows the time to be set (hours and minutes) in both directions.

Position A

winding possible without 
opening the crown guard

Position B

Pull the crown  
to set the time

Crown guard open

Moon phase

Отзывы: