This item was given to me about 40 years ago by an acquaintance who lived in the United States at the time. Please understand that it is old and I do not know if it meets current safety standards. Consider it for your collection. The size in the product information is listed as 12cm, but this is an approximate size as there is no size indication. Please be aware of this. It is unused and in a clean condition, but please check the images and only purchase if you understand that it is an old item that has been stored at home for a long time. The lid of the box will be opened for packaging because it will not fit in a Yu-Packet Plus box with the lid closed.