About 20 minutes into the movie, when Egbert Sousé is walking out of the Black Pussycat Restaurant, reading the newspaper, he leans against a car, and the driver is none too pleased. It reminds me a little of Moe Howard, but you only see about half the face.
The IMDB listing has an extensive list of uncredited players (and in old movies like this, that’s often the result of someone who had access to production notes and records). Moe’s not listed, and the only possible person who might be the driver is David Thursby listed simply as having a ‘minor role’. But I’m not familiar enough with him to be positive about it.
But. . of course, big brother Shemp has an actual role in the movie, so that’s also probably influencing my eyesight.