"Clearly, it's an iconic building with tremendous reputational value for the right buyer," Brian Lott, spokesperson for Mubadala, said on Wednesday.
Today it is only the sixth tallest building in the city and will drop down another notch later this year when a new office tower opens on the city's west side.
But it is still one of New York's most recognizable buildings.
It is famous for its triangle-shaped, vaulted windows worked into the stylised crown, along with its distinctive eagle gargoyles near the top.
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