Abstract: The invention concerns a timepiece movement of the type including a fixed support (23), fitted with a display module (24) including a central bridge (26) secured to said support (22) and an annular display member (28) with an axis AA, mounted to rotate freely substantially around the bridge (26), abutting on the support (22). The display member (28) includes a contact surface (37) and the bridge (26) includes at least one positioning surface (40) cooperating with the contact surface (37) so as to position the display member (28) axially on the support (22).

Abstract: The invention concerns an annual calendar mechanism, including: a date ring including a lug and 31 teeth, and a date wheel set arranged for rotating the date ring through one step per day, an intermediate wheel set cooperating with the lug such that the date wheel set drives the intermediate wheel set through a first step when the date passes from the 30th to the 31st of the month, via the date ring, an annual wheel set meshed with the intermediate wheel set and cooperating with the date wheel set, the date, intermediate and annual wheel sets being arranged such that the date wheel set drives the intermediate wheel set through a second step when the date passes from the 31st to the 1st of the month, for the months of 31 days, via the date ring, and such that the date wheel set drives the intermediate wheel set through a second step after the date has passed from the 30th to the 31st of the month, for the months of less than 31 days, via the annual wheel set, the intermediate wheel set then driving the date

Abstract: The invention concerns a timepiece movement of the type including a fixed support (23), fitted with a display module (24) including a central bridge (26) secured to said support (22) and an annular display member (28) with an axis AA, mounted to rotate freely substantially around the bridge (26), abutting on the support (22). The display member (28) includes a contact surface (37) and the bridge (26) includes at least one positioning surface (40) cooperating with the contact surface (37) so as to position the display member (28) axially on the support (22).

Abstract: The invention concerns an annual calendar mechanism, including: a date ring (10) including a lug (30) and 31 teeth (32), and a date wheel set (12) arranged for rotating the date ring (10) through one step per day, an intermediate wheel set (16, 56) cooperating with said lug (30) such that the date wheel set (12) drives the intermediate wheel set (16) through a first step when the date passes from the 30th to the 31st of the month, via the date ring (10), an annual wheel set (14) meshed with the intermediate wheel set (16) and cooperating with the date wheel set (12), said date (12), intermediate (16) and annual (14) wheel sets being arranged such that said date wheel set (12) drives the intermediate wheel set (16) through a second step when the date passes from the 31st to the 1st of the month, for the months of 31 days, via the date ring (10), and such that said date wheel set (12) drives the intermediate wheel set (16) through a second step after the date has passed from the 30th to the 31st of the month, f