Released for Cast Members and guests starting in 2010, the Mickey's of Glendale Sorcerer Hats Mystery Pin Collection serves as the first installment in a Holidays theme series dedicated to Halloween designs, featuring iconic Disney park figures within sealed black boxes. These limited edition pins are crafted from enamel using molds of Walt Disney Imagineering's classic sorcerer hat iconography and feature unique surface patterns on each piece that reflect specific holiday themes such as Jack O' Lanterns, Space Mountain Ghost Galaxies, Haunted Mansion Holidays, and Trick or Treat Candies, while the Mystery Chaser pin is notably displayed on the back with a white question mark instead of its character portrait. While individual pins are sold in their own mystery box containing a single LE piece, the entire collection is restricted to one set comprising the lowest edition size available, which corresponds to the limited edition count of the rarest Le pins across all five featured characters, resulting in an exclusive total edition size of 200 pieces for this specific "Holidays" release.