Here’s a video I found that was titled “Cubs game, Wrigley Field, Chicago, early 1940s.”
The scoreboard is clearly visible at the beginning of the video, as you can see at the top of this post. Here’s that image again:
Mike Bojanowski and I went back and forth on this one for quite a bit. Finally, he hit on most of it, and here’s what he sent me.
Al tossed this one my way recently, we figured we could sleuth a date.