Walt Disney World Epcot 35th Anniversary Mystery Collection Pin. The round pin features the Universe of Energy logo in red glitter. Each pin in the set represents the icon of one of the original future world pavilion attractions at Epcot. There are 9 pins in the collection. Each box contains 2 randomly selected pins. The back of the pin features the 2017 Pin Trading logo, Epcot's 35th anniversary logo, and the serial number FAC-000122-17150.