WatchTech

Let's analyze this logically - the crown is usually near the wrist of your left arm / hand. In that position it is unlikely to receive a direct blow of any kind that doesn't also hurt your wrist. But it's still possible if you're swinging your arm and going through a narrow space. Otherwise, the blow to the crown is likely if the watch is NOT on your arm and is dropped or falls off a surface.

I can tell you from multiple experiences that a pocket watch falling even a short distance is likely to suffer damage to the movement, because typically they are not shock protected. You are supposed to protect them by wearing them on a chain, and keeping them in your vest or pants pocket.

I took care of this nice pocket watch for a pal. It got repairs to the keyless works and a new balance wheel shaft.

He has a mild tremor and fumbled the watch a couple days after he received it.  No visible physical damage, from what he said was "only 4-5 feet onto a thin rug on the floor!" 

But that's enough -- it broke the new balance pivot anyway which is only about the diameter of a human hair.

The hairspring adjusting lever popped off and was dangerously dragging on the still-oscillating balance wheel. Luckily it didn't fall deeper into the movement and do more damage. 



I fished it out and then using my other watches as a guide, pressed the lever back on in roughly the correct alignment





Checked the movement for any other issues, then re-timed the watch. It took an hour or so to get everything back into proper condition. But it very well could have been a disaster.

I fished them out from the stem's opening.

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