These are vintage Ultraman series monster erasers released by companies like Popy in the 1970s. There may be a couple of items from other series, but the majority are from the Ultraman series. Some do not have stamps, but most are genuine with stamps. They are old, so there are scratches and stains. Some duplicates and damaged items are included, so this is being sold as a junk item. Everything in the photos is included. There are approximately 170 pieces. Please allow for some margin of error. Please consider purchasing based on the photos.