Chicago Stadium Scoreboard
Well, everyone, I get an OOPS.
The Chicago Stadium clock from the '40s through the '70s was actually made by Bulova. I've done some research and there appear to have been four identical clocks made: one for Chicago Stadium, one for the Detroit Olympia, one for the Boston Garden, and one for the Buffalo Memorial Auditorium. The Buffalo installation appears to have been done somewhere between 1947 and 1949.
I'm trying to get the archivist from Bulova to dig through whatever records and photos the company has from that far back to see if they can provide information on the physical dimensions, cost, etc.