[idk01]

There is one way to check without opening the caseback, listen to the sounds the rotor listed as it swings around inside the case, I've noticed on recent fakes the rotor does sounds tinny and not smooth at all depending on the type of movement, as these movements usually use a spacer in the case and do not fit snug there is alto a bit of movement when manual winding and changing date a and time that can be noticed as the dial shifts around as with the hands.