I recently thrifted a 1957 copy of All-Star Baseball and inside I found 18 disks that looked like this.
Thanks to a fellow thrifter I learned
Another more radical variation appeared in 1957 -- Ethan Allen's Manager's Supplement To All-Star Baseball. It was not, in fact, so much a "supplement" as an entirely different game, more strategically involved and sophisticated than All-Star Baseball, featuring larger disks incompatible with the standard version. Allen spent many years trying to wean the many fans of his game from the basic version and onto a more detailed form, but he was not successful with this first effort at it.
Now I am in a quandry. I am wanting to sell these disks and I was wondering if anyone would be able to put a price on them, or help me determine an asking price?