These are posters from 18 Olympic Games, from the 1st Athens Games to the 21st Montreal Games, produced by Shiseido. I don't know how many were issued, but I imagine they are valuable. Of course, the 1964 Tokyo Olympics are also included. There are some creases at the top, likely from being rolled up. Also, there is yellowing overall (especially around the edges). The size is B4. Olympics Olympic Five Rings Milan Cortina