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I bought one in Hong Kong in 1958. Some clothes, too.
Nope. Not that old. But I read about them in a book!!
And how old is someone who did not have an abacus to use?
Abacus? what's that? LOL!
This is the follow on from my earlier puzzle . . . ;D)
I did learn to count on these things, I think they called them the beads