George Nelson often collaborated with other designers, and in the case of the Ball Clock (1948), Nelson was at a dinner party with Isamu Noguchi, Irving Harper and Bucky Fuller. As the story goes, they were all sketching and "we'd had a little bit too much to drink," said Nelson. In the morning, they saw a drawing of the Ball Clock on a roll of drafting paper. "I don't know to this day who cooked it up," said Nelson. "I know it wasn't me. It might have been Irving, but he didn't think so. [We] both guessed that Isamu had probably done it because [he] has a genius for doing two stupid things and making something extraordinary out of the combination. It could have been an additive thing, but we never knew." The Ball Clock has been diligently reproduced by the Vitra Design Museum. One AA battery included. Made in Poland.

• The Ball Clock in Walnut is a DWR Exclusive.
• The Ball Clock in Natural is the only model to include a second hand.