This item has been stored at my parents' house for a long time and has not been used. Although it is unused, there may be some deterioration due to the long years of storage. There is some dirt on the bottom and black spots inside. It's from around 1978. It seems to be a cup that changes color when hot Milo is poured in, but the color has already faded due to deterioration. I would appreciate it if you could understand that this is a long-term storage item. Instant purchase is OK.