I'm selling a 27-digit abacus that I purchased for elementary school classes, but it was hardly used and has been stored in its box. The box has some stains, so I'm only offering the abacus itself. There are traces of cellophane tape on the back, but I believe the abacus itself is in good condition. I hope someone will use it well from now on. #Sanko Soroban #Soroban 27 digits