This is a wooden abacus. It has not been used and has been carefully stored in a closet. It has 15 columns, metal rods, and a backboard. The middle bar is engraved with the characters "万・千・百・十・円" (ten thousands, thousands, hundreds, tens, yen). It may be from around the 1970s. It comes with a box, but it's bulky, so I will pack only the abacus with bubble wrap for shipping. The owner's last name is written on the back of the box, so I will erase it with correction tape before shipping. If you need the box, please write in the comments section. I will erase the owner's last name on the back of the box with correction tape before shipping (see the last photo).