Timepiece

In a timepiece having a control mechanism including a rotatable control stem with several axial positions, at each of which it effects a different operation, a calendar mechanism including a crown-ring indicator having circumferentially spaced radial slots, a driving disc having a pair of diametrically opposed drive pins spaced from each other a distance corresponding to the distance separating the openings to said slots, a driving member rotatably driven at the rate of one revolution per 24 hour period and having means for driving said driving disc step-by-step at the rate of one step per 24 hour period, said driving disc and crown-ring indicator being disposed such that said drive pins cooperate with said radial slots so that during each step of said driving disc one of said pins drives said crown-ring indicator through one step while traveling into and out of one of said slots, said drive pins during each successive rest position of said driving disc being disposed in locking engagement within the openings to two of said slots, an improved correcting mechanism for setting said crown-ring indicator comprising means for connecting said control stem and driving disc when said control stem is in one of its axial positions, and means for mounting said driving member for movement to an inoperative position with respect to said driving disc for releasing said driving disc with respect thereto so that said driving disc can be operated by said correcting mechanism.