During the Christmas holidays, I was watching TV (as you do) and stumbled across an episode of Hart to Hart from 1982. To my surprise the episode was about a plot to steal baseball cards.
From IMDB: "One of Jonathan's vice presidents dies, and leaves his family penniless; the Harts try to recover stolen vintage baseball cards that could be worth a fortune to the man's family."
You can watch the episode here:
https://www.dailymotion.com/video/x61atuo
Any other TV shows/movies that you can name featuring baseball cards (or even Football or Basketball cards)?