Walt Disney World Epcot 35th Anniversary Mystery Collection Pin. The round pin features the World of Motion Symbol in clear blue enamel with some aged pitting on the left part of the symbol. 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.