While excessive patina is often washed away from public statues along with bird droppings, few bronze statues of any age, lack patina entirely.
Figuratively "patina" can also refer to any fading, darkening or other signs of age, which are felt to be natural and/or unavoidable.
Sculptors often apply a Patina to a sculpture by purpose. The sculptor emphasize the artistic look of a work.
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