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4224640 Dr. Kilroy Key Chain is an Orient Expedition Key Chains set released in 2003. The set includes the Dr. Kilroy minifigure, as well as the LEGO logo printed on a white 2x2 tile. The minifigure parts can move, but can not come apart, because a special glue is used to fix them in place.
- It is the same set as KC32 Dr. Kilroy Key Chain.