Orient Multi Month Calendar Power Reserve
Cal. EX01

I have marked the positions of the two arms of the Magic Lever

with two slightly brighter ellipsoid areas. The left arm is barely visible, but the right arm of the magic lever is clearly visible. Also note the two openings in the auto winding bridge. Those openings have two functions. You can check whether both arms of the magic lever are still gripping on the magic lever wheel. In addition when installing the auto winding system onto the movement, the holes will allow you to spread the magic lever and place it on the magic lever wheel if the placing of the auto bridge has displaced the magic lever wheel. Reassembling this unit requires stable hands but I would not consider it as very difficult. Reassembling a small train of a quartz watch movement is a real test for your nerves.