Interesting Tenkaichi Soroban 15 Column Plastic Abacus from the 1970’s. Made in Japan, it has not been used and comes in its original colourful box which measures 222x68mm. Please check photos for more information on condition and content. If you would like to buy more than one please contact me as I will be able to give a discount. I will post outside of the UK although there will be an additional postage cost.
eBay