Japanese Soroban Abacus Pre 1930
A wonderful old Japanese abacus with bone and writing. This is known as a soroban in Japan and was based on a Chinese version.
There are 21 rows of beads with a separation of one/five. One at the top and five at the bottom. The beads at the top and bottom are separated by a division which has been fronted in bone and has writing on all but one of the rows. I presume the writing is for counting. The Japanese design was changed from a one/five to a one/four layout in 1930 when the school textbooks were revised. Therefore this is pre 1930.
This is a beautifully made item crafted using dovetail joints but no screws or bolts as far as I can see. I understand that the sides and bottom are made from oak, the beads are beech and the dowels are made from bamboo.
The abacus measures approx. 40cm x 9.5cm x 2.5cm and weighs 500g. It is in excellent condition but is in need of a good dust behind the beads. Sorry about that!
Condition : Used
Product Code : 242
Weight : 0.5kg