The following us an AI description provided by eBay.  Acquired at an Estate/hoarder sale

For the juggling enthusiast, this set of 3 vintage juggling balls is a must-have addition to your collection. Made by the trusted brand "More Balls Than Most", these balls are perfect for beginners and professionals alike.

Crafted with high-quality materials and designed for optimal grip and weight, these juggling balls are sure to impress. With the witty phrase "It Takes Balls To Juggle" printed on the box, this set is not only functional but also adds a touch of humor to your juggling routine. Don't miss out on the chance to own this new, never-been-used set of vintage juggling balls.