Muse Illustration Board SS KMK Kent B3 A3 A4 Set of 5 ① B3 size, 2mm thick, 1 sheet (unused but opened) ② A3 size, 2mm thick, 3 sheets (unopened) ③ A4 size, 2mm thick, 1 sheet (unopened) * ① B3 size only opened. Photos 2 and 3: The outer bag has many stains on the front and back that cannot be wiped off, so I opened it to take photos (Photos 4 and 5). The inside was clean. * Photo 7: One of the A3 size sheets (②) has a stain on the back of the outer bag. Please understand that these are used items that have been stored at home for a long time, and please purchase them if you don't mind. I will put them in a paper bag and ship them immediately.