The box says "Ishimon-sen 5-color dyed set" (last photo). I counted, and there are 10 sheets each of 4 colors. It seems my father used one color. Although unused, it seems that some time has passed since purchase, and the paper has aged considerably. I've heard that paper gets better with age, so I'm offering it for sale in the hopes that someone who appreciates it will find it useful. As you can see in the photos, the colors have also faded quite a bit. Please examine the photos carefully before considering a purchase.