6514

[lesorange]

6514 = W in the E S B

[fiction-factory]

windows in the Empire State Building?

[Buenchico]

Moderator's note:
Welcome to The Answerbank, Lesorange, but please check that you're posting in the correct category. (i.e. 'Quizzes & Puzzles')

Well done, Fiction-Factory ;-)
https://en.wikipedia.org/wiki/Empire_State_Building