hi Mike, hope all is well. That Koufax game photo looks familiar
I looked all over for protective cases, but they are hard to find in odd sizes, so years ago I had Dan at Lin Terry make up a case for the game, as well as some other cases for other items. It's been a while, so I don't remember what it cost. The Koufax game case slides open at the top, and can be wall mounted. If you go this route, give him a picture of the item and the exact dimensions. It can take him 2-3 months, or more, to get them to you.
good luck,
Rick