EntityQ2594781· pop 8· linked from 29 articlesspecimen stampSign in to savepostage stamp or postal stationery indicium sent to postmasters and postal administrations so that they are able to identify valid stamps and to avoid forgeriesConnectionsInternational Standard Book NumberEntitypostage stampEntityEdward VIIPersonphilatelyEntityUniversal Postal UnionEntityPenny BlackEntityColony of NatalEntityrevenue stampEntityDe La RueCompanyinternational reply couponEntitypostal stationeryEntitypostmasterEntityTwo Penny BlueEntitypattern coinEntitySpecimenEntityindiciaEntitylist of postal entitiesEntityspecimen banknoteEntityRoyal Philatelic Society LondonEntityJames A. MackayEntityCategoriesPhilatelic terminology