The abacus, also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe,
Order the Little Dutch Vintage Abacus FSC online - Baby Plus
Vintage School Abacus, 1930s for sale at Pamono
Antique Chinese wooden abacus (item #1436954)
VINTAGE CHINESE WOODEN ABACUS
Abacus Antique Abacus Large Abacus Large Vintage Abacus Soviet
Vintage abacus on wooden background Stock Photo by ©Fotofabrika
1/6 Scale Vintage Abacus Counting Frame Thinking Model for 12
Vintage abacus hi-res stock photography and images - Alamy
Antique Abacus
Vintage Abacus Like Decor — Big Whale Consignment
Vintage Japanese SUN Stained Wood 13 Column Abacus, Counting