SALE item is an 'opened' but un-used box of the film. Previous buyer bought the wrong item, and found out only after opening it. Films are unexposed of course.
This is a 50 sheet box of 9x12cm (NOT 4x5!) Fomapan 100 Classic film.
Fomapan 100 Classic is a panchromatically sensitized, black-and-white negative film designed for taking photographs.