Some time ago I noticed a running joke going across multiple anime throughout the decades, where the animators will put a clock or a watch in a show with the name of the studio displayed on it.
Aim for the Ace! (1973)
I really wish I had more samples to show, and I’m not sure how it all started, either. Does it even have its origins in Japanese animation? Can anyone answer that?
I think the first piece of the puzzle is probably just to see how prolific this sort of thing really is, so I’m making a call out to everyone who reads this blog and beyond: if you are so inclined, find as many instances as you possibly can of anime where a studio’s name is prominently displayed on a clock or watch.