An early 1900's antique treen jigsaw in the shape of a wooden ball. Described by Pinto as a Chinese globe puzzle, being as difficult to make as it is to assemble'. It's made from one piece of wood and all the pieces slide out. It comes with a later made stand.
Illustrated in Plate 241  in Treen and other wooden bygones by Pinto
It measures approx 8cm w.