This is a DVD collection of science education films produced by Iwanami Film Production in the 1960s and 70s. This selection of 50 films is from a series of masterpieces that have been highly acclaimed worldwide. Both the DVD case and the disc itself are, in my subjective opinion, free of scratches and stains. There are also no markings on the "explanatory booklet." The outer box shows some signs of use (please see the photos). Please refer to the photos for the contents of the collection. If you are an educational institution and require a receipt, we will provide one.