Disney Pin 00020 Star Wars Master Yoda PP Preproduction Sample Rare Grail LE 5

According to Pinpics: A Pre Production/Prototype pin, or PP pin, is a pin that is created to give Disney artists a general idea of what the pin will eventually look like. Because these pins are only used to compare artwork, there are only 5 or less PP pins made. If Disney finds something that isn't up to standard, a second group of PP pins will be sent to Disney for their approval.