Vintage Wooden Abacus with Black Beads

Classic wooden abacus featuring black beads. Perfect for educational purposes or as a decorative piece.  The standard abacus can be used to perform addition, subtraction, division, and multiplication; the abacus can also be used to extract square-roots and cubic roots. The beads are manipulated with either the index finger or the thumb of one hand.  Excellent used condition. Normal visible signs of use, wear, marks, or other irregularities are possible. See pictures for details.  Due to various settings on different devices, color shade can vary.  Smoke-free and pet free home.  Questions? Leave a comment below