It is difficult to have the 20 versions! almost impossible the full! I think the post office has exaggerated the versions, so there will be more madness! Since they now send the postage stamps randomly, and since they are sealed in the package, pre-verification is not possible. If I get yellows, that's great. But I ask, for the stamp to be registered in my wallet, I have to remove the sticker that covers the codes, so the postage stamp is no longer virgin. Or the stamps when they are sent, the Austrian post office registers as me the owner. , I still don't understand this well.