A rare carved bone abacus with an integral reverse glass painting depicting four boys, in a garden setting, peering nto a large fish bowl.

There is an added inscritpion carved into one side recording that this item was given as a gift in Hong Kong in 1953.

Condition; very good - no damages or losses.

11.5cm (4.5 inches) long; 5.5cm (2.2 inches) wide; 1.5cm deep.