I happen to live in Pittsburgh, Pennsylvania. The street scenes have changed from those shown in that YouTube recording/photo collage whose link is given above. But I'm here to let everyone who is interested know that there still are a few pawn shops in Pittsburgh, Pennsylvania (though I don't believe that any of them are in the downtown business section).

The "clock" referenced in the song-which is affixed to a department store on the corner of two of the main streets-is also still there. And, so far, even though the department store changed names some years ago, "under Kaufmann's clock" is still where lots of people arrange to meet those who might be unfamiliar with the city's downtown area.