old school abacus, made in ussr, isolated on a white background

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abaci abacus accounting accounts fig addition ancient antique arithmetical asian bead brown business calculation calculator chinese clash compute count counting-frame device discrete dusty equals frame instrument learning math mathematical mathematics metal movable move numbers numerical old primitive problems retro rows series solve subtract subtraction sums tool total traditional vintage wood wooden
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  • Published on Nov 09, 2022
  • Photo type JPG
  • Category Vintage