On sale at Sotheby's: Lot no 232 - from the Malcolm Forbes Toy Collection - a 1933 handmade Monopoly game set.
It is the oldest of its kind in existence, hand penned and painted by Charles B. Darrow (the guy who developed the Atlantic City version of the game).
The gameboard is circular.
Expected to fetch US$60,000-$80,000.
(via Dinosaurs and Robots)