Help with origins of these baseball dice

[BradH]

I picked up this little box of baseball dice at an antique shop in the 1990s for a couple bucks. There are 12 of them with various baseball plays on each side, and they are a bit smaller than the average dice you would normally play a game with.

I'm assuming the box is original to the dice, but I don't know this for sure. The box is plain brown with a faded stamp that reads "1/2 Ivory" and another small word that is tough to read and has been scratched out ("blanks" maybe?). The box measures 1-5/8" x 2-1/4".

I'm just wondering if anyone knows what game these dice came from? I've always assumed they were 1950s or '60s, but am looking for any tips. Thanks!