The carrier features an unprecedented and brilliant display of the instant perpetual calendar. Featuring a retrograde date display, it is activated by an ingenious system of transmission. Every evening, at exactly midnight, the calibre gives an impulse to the base in order to update all the calendar information.
On the back, sidereal time, Reverso Grande Complication à Triptyque
Crystal gong, Master Minute Repeater
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In the carrier, perpetual time, Reverso Grande Complication à Triptyque
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