For organizing and sorting postcards, handmade items, etc... You can see the contents, so it can also be used as a frame. It seems like you can store more than 10 sheets. Also suitable as materials for DM distribution. (Postcards are not included, they are for size comparison) Unused and in a clean condition, but there may be very small stains. Please consider this if you understand the above. ◆No price negotiations, please◆ Postcard size storage collection