Four Antique Chinese Wooden Abacuses

19th or 20th century, each abacus set with wooden case backing, some with inscriptions, each numbered in Chinese across the central divider.

Largest 1 1/4 x 13 x 4 1/2 in.

From the Estate of the late William Donnett, Sanford, North Carolina

Good estate condition; general surface wear from age and use.