All of this came via Curbed:

As condo time
approaches for the Williamsburg Savings Bank Building, Magic Johnson
and friends plan to remake the iconic Brooklyn landmark into a luxury
haven. An overlooked landmark inside the building closed last week.
Writes blogger Englishman in New York:

Although the banking hall
was mentioned in passing it never merited a story in its own right. I
can’t even find a photograph of the interior of the hall online. And
when it closed its doors after 75 years in business on Friday how many
words were written about it? None.