Plaza Arcade cuts through the middle of the block from the 48th St. side of Rockefeller Plaza to the "diamond district" on 47th St. between 5th & 6th Aves. Its main tenant is Ross Metals, and (beyond the beaded witnesses in the window, left) its main attraction is the signs.
There's the fetching Arcade Coffee signs above.
And the Ross Metal signs above and below, whose strong "mystical system" style reminds me of Paul Laffoley's work.
And then there's the best NO sign I've ever seen on Ross Metal's door: NO DRINKS, NO CARRIAGES, NO FOOD, NO RADIOS, NO SMOKING, NO UMBRELLAS, NO SOLICITING, NO LOITERING!