Pin Trading Fun Day Invitation Card Pin. Stitch, angel, scrump are on the Invitation Card. Purchase this pin with a post card. Hong Kong Disneyland only held ONE TIME for Pin Trading Day through out the whole year.( This year is started at 9 to 11 April, 2010 ) Back of pin: Official Pin Trading 2010 Hong Kong Disneyland logo © Disney LIMITED EDITION xxx/500 This year 3 Limited Edition Pins will be launched for the Pin Trading Fun Day. Invitation Card Pin (Release size 500 pieces) Jumbo Pin Box Set (Release size 2500 sets) Pin Champion Pin (Release size 500 pieces) It is a large pin that measures 3 inches high and 2 inches wide, and it has two posts on the back.