Chinese abacus / suan pan wooden

Chinese Abacus / Suan pan made of a black lacquer wooden frame (only a small sliver is present on this painting but which does nothing to its charm), of 13 rods of vertical bamboo indicating units, tens, hundreds, etc and a bar plant. Each vertical stem are present 7 wooden balls in lacquered red, 5 unary which are worth 1 and 2 quinaires, which are worth 5. Each corner is covered with an angle type brass silver to strengthen the structure and adds charm to the whole of the abacus. Order symbol, concentration, address and method, this very beautiful decorative object can be asked on a piece of furniture but also simply cling with a nail on the wall.