This pin is one in a series of Walt Disney World exclusive pins made for Cast Member to wear on their lanyards for trading with the public. The back of each pin reads Disney's Lanyard Pin Series. Mickey is sticking out of the letter "S" in a pin that depicts USA in the Red, White and Blue stars and stripes, colors of the American flag. This is part of the USA series which includes #11000, #12800, #13499, #15311, #15955, 17166. Note: Most Cast Lanyard Series, Cast Lanyard Collection, and Global Lanyard Collection pins were released before Disney began placing Hidden Mickey symbols on these pins.