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Stockholmia 2019 advertisement poster depicting the S/S Scandinavian, The Penny Black,Tre Skilling Banco error of colour Swedish stamp and the venue of the exhibition, the Waterfront Congress Centre. The Stockholmia 2019 Internationell Frimärksutställning (International Stamp Exhibition) was held from 29 May to 2 June 2019. The exhibition commemorated the International Celebration of the 150th Anniversary of the Royal Philatelic Society London.