(Postage stamps) can be illegal.Logical formLearned from2 sentences. (Member states) may issue (postage stamps).Logical formLearned from2 sentences. (Cultural heritage) can be in (postage stamps).Logical formLearned from2 sentences. A postal-bureau may issue sheets of (postage stamps).Logical formLearned from2 sentences. A stamp can be valid for postage.Logical formLearned from2 sentences. A (postage stamp) may be sold at auction.Logical formLearned from2 sentences. A (postage stamp) may be found by a schoolboy.Logical formLearned from2 sentences. A (postage stamp) may be depicted.Logical formLearned from2 sentences. A commemorative (postage stamp) may depict a portrait.Logical formLearned from2 sentences. A service-department of a government of a country may issue a commemorative (postage stamp).Logical formLearned from2 sentences. (Postage stamps) may be marked.Logical formLearned from2 sentences. (Postage stamps) may be issued during an occupation of an island.Logical formLearned from2 sentences. A male may design a (postage stamp).Logical formLearned from2 sentences. (Postage stamps) can be valid.Logical formLearned from2 sentences. (Postage stamps) may be purchased.Logical formLearned from2 sentences.