Vintage Chinese suanpan abacus set, 13 rods / 91 beads, in its original worn box, with the Kwa Tak Ming "Bead Arithmetic" instruction booklet. Used — good vintage condition, box shows wear.
Vintage Chinese suanpan abacus set, 13 rods / 91 beads, in its original worn box, with the Kwa Tak Ming "Bead Arithmetic" instruction booklet. Used — good vintage condition, box shows wear.