These are displayable coasters from a Karaoke Big Echo collaboration. There are two types: Ai Haibara and Tooru Amuro. They were opened for confirmation, but immediately put back in the bag and are unused. This is a booklet that came as a bonus with the movie tickets for the 15th anniversary film. It contains poster visuals up to the 15th film, and the latter half features a short manga. As shown in the photos, there is some yellowing.