Up for sale is a rare, hard to find pin that was given exclusively to cast members at the Walt Disney 100th Birthday Celebration on the Studio Lot in Burbank, CA.   The pin has a picture of a younger Walt in the center with film strips on each side depicting Steamboat Willie on one and the "present" Mickey on the other.  The bottom says Walt Disney Studios.  Pinpics states it is a limited edition of 300, but there are no markings on the pin to indicate such.