Who invented the globe inflatable beach ball?

Today’s impossible task: who invented the first beach ball that has a globe (i.e., map of the earth) printed on it? Or, slightly less impossible: When did these things first come to market? 1990? 1980? 1960?

Ummmm, Michael Palin maybe?

A 1953 US newspaper story:

Just to get you started.

Fan-tastic! Thanks, Sam. Just what I was looking for. I had hoped they appeared before 1960. (I’m working on a short story.)

There’s also this famous scene from The Great Dictator (1940).