Painted in 1948 at the height of Pollock's career-defining "drip period," Number 17A is considered one of the finest surviving examples of the technique that redefined American painting.
It had rarely left private hands since it was painted.
Hedge fund billionaire Kenneth Griffin bought it in a private sale reported at $200 million.
In a single year, one collector personally spent roughly half a billion dollars on two paintings alone.
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