October-November 1950. Loath as I am to admit it, I'm with the Joker here — a march in 1950 was pretty corny, although in compensation, this story from WORLD'S FINEST COMICS #48 has an imaginative plot (with some of Bill Finger's most over-the-top narration) and an ingenious death trap involving a gigantic carillon:
The use of the musical notes and sound effects is clever, and makes this story feel all the more like something from the 1966 BATMAN TV show (it's easy to imagine William Dozier reading the narration), but Lew Sayre Schwartz, ghosting for Bob Kane during this period, doesn't have Dick Sprang's flair for giant props or elaborate scenery; the photo references are distractingly obvious and don't fit stylistically with the figure work. It seems like the artist also struggled a little with the script's unusual storytelling demands, especially in panels 3 and 4, where what Batman is doing with the board and the window is none too clear.
If Sprang had penciled this story, it might have been a classic, but alas, comics writers and artists of this period didn't have much say over who drew which script, and direct dialogue between writer and artist was generally rare at National-DC well into the 1970s.