Classic ancient working abacus cufflinks in sterling silver. 13 grams sterling silver total pair weight (.455 ounces). The abacus is known to have existed in Babylonia and in China, with invention to have taken place between 1000 BC and 500 BC. The abacus is synonymous with mathematics, finance and accounting and is still widely used by merchants and clerks in the China, Japan, Hong Kong, Africa, and elsewhere.
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