The Hidden Mickey Series - Monorails - Mark II Blue Yellow 2 Pin Set is a collectible pin set featuring characters from the Disney franchise. Specifically, this set includes pins with a monorail theme from the year 2011. As part of the Hidden Mickey Series, these pins are known for their intricate designs and colorful patterns, making them highly sought after by collectors. Perfect for fans of Disney and pin collecting, this set is sure to be a valuable addition to any collection.