Wooden Abacus with Storage Case Product Description Set of a wooden abacus and storage case. This is a Showa-retro abacus. - Material: Wood - Size: 23 digits - Accessories: With case There are many scratches and stains. There are marks from where a name was carved on the back and then removed. Please understand that this is a used item that was used quite some time ago, and please consider this when making a purchase. The case will be folded in half for shipping. Instant purchase is OK.