Nivada valjoux 23 windows#

Copyright is held by the original owner as noted. Images are taken from official publications and are used here for commentary and educational purposes. 89 DXC – Compact 10.5 ligne triple calendar 78 VZSC – Non-chronograph triple calendar 72 VZH – Basic movement with hour counter 23 VZ – Basic movement with no hour counter Many components are shared between most or all of these movements, with the main variations happening together over the long production of the series. 23/72 family was primarily made up of eight movements, with all others being variations on these. 72c also came with either flat or Breguet hairsprings with different regulators. While all Valjoux 72c movements feature inset pushers at 8:30 and 10:00 to advance the calendar functions, only later versions can advance the day using a half-push of the pusher at 10. It must be manually set using the inset pusher. Note that the month does not automatically “roll over” with the date.

This is to protect the calendar mechanism, which advances at midnight. Valjoux does not recommend operating the day, month, or date adjusters between the hours of 20:00 and 2:00.

Central date hand, advanced using an inset pusher at 8:30.

Month wheel with window at 12:30, advanced using an inset pusher at 10:00.

Day of week wheel with window at 11:30, advanced using an inset pusher at 10:00 with a deeper press.

Nivada valjoux 23 windows#

This is a “triple calendar” movement, with day and month shown via disc through dial windows and the date indicated by a central hand. The latter is more likely, as this movement adds a calendar complication to the base. 72c measures 6.95 mm thick, the same as Cal. This function is powered by a gear on the dial side of the movement which tends to wear over time.

The Valjoux 23C and 72c are almost identical except that the latter adds a 12 hour counter at 6:00 on the dial. 1966 Brand: Nivada Grenchen Swiss Made Model: Chronomaster Aviator Seadiver Year: 1966 Caliber: 17 jewels Valjoux 23 kronograf Glas: Plexi om. It is said that about 1,300 examples of Cal, 72c were produced, far fewer than the similar full-calendar Cal. Valjoux 88 adds a moon phase disc at 6:00.

72C was introduced around 1946 and produced through 1974. The Valjoux 72c VZHC (“Valjoux Zähler Heure Calendrier”) is a “triple date” hand-winding chronograph movement in the Valjoux 72 family.