Looks like he was left out side for too long! and is that the tritium scattered on the dial?

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Looks like one of these murder case watches we had in the other thread recently.

 

I am no expert, but that is not water damage.
Looks like heat (and some water too...) mainly.
Maybe even some sour substance might have been the culprit.

 

"Verdi gris"

Desirable on statues.