I have a beautiful Oris Artelier Complication (7548) in perfect condition -- except the moon phase complication has ceased to function. No moon is visible in the window at 12 and following the manufacturer's instructions on advancing the moon disc doesn't work. The watch has had extremely limited use, a bit of a closet queen that I took out to sync the moon phase with the current date and noticed the problem. The instructions (move the hour hand between 10 and 11 before the date change at midnight) worked on the 1-2 other occasions that I made the adjustment.
Before I give up and send it to the OSC, has anyone else had this problem and solved it without having to resort to a factory repair?