Abstract: Disclosed is an escapement mechanism (1) for a timepiece, designed to cooperate with an oscillator arranged to carry out oscillations, said mechanism (1) comprising: —a count wheel (7) arranged for step-wise forward rotation depending on the oscillations of the oscillator; —an impulse wheel (11) designed to be kinematically linked to a power source, said impulse wheel (11) being arranged to be periodically blocked and released under the control of the count wheel (7) and to supply impulses to the oscillator, characterized in that: —when said escapement mechanism (1) is operating, the count wheel (7) is continuously subjected to a torque; —and the count wheel (7) is arranged to rotate forward by one half-step of its toothing for every vibration of the oscillator.

Abstract: A mechanism for indication of the lunar phases, in particular for a mechanical watch, including a moon disk and a dial having a substantially semi-circular aperture. The moon disk is rotated in such a way as to display the indications inscribed on the moon disk through the aperture in order to indicate the lunar phases. In addition, the mechanism comprises at least one first occultation disk housed rotatably, at least in part, between the moon disk and the dial, and a gear train which drives the at least first occultation disk in such a way that the indications inscribed on the moon disk are obscured, at least in part, during specific phases of operation of the mechanism in such a manner that the indications appearing through the aperture correspond substantially to the natural appearance of the moon during the entire lunation. The invention also relates to a watch piece comprising such an indication mechanism.

Abstract: A mechanism for indication of the lunar phases, in particular for a mechanical watch, including a moon disk and a dial having a substantially semi-circular aperture. The moon disk is rotated in such a way as to display the indications inscribed on the moon disk through the aperture in order to indicate the lunar phases. In addition, the mechanism comprises at least one first occultation disk housed rotatably, at least in part, between the moon disk and the dial, and a gear train which drives the at least first occultation disk in such a way that the indications inscribed on the moon disk are obscured, at least in part, during specific phases of operation of the mechanism in such a manner that the indications appearing through the aperture correspond substantially to the natural appearance of the moon during the entire lunation. The invention also relates to a watch piece comprising such an indication mechanism.