1928 Olympic Issues of Other Countries. Portugal: 1928 Olympic 15c and 30c with "ESPÉCIMEN" hs affixed to printer's presentation notice, 13.5x14.4cm, inscribed at top "Casa da Moeda e Valores Selados" (the security printers) and "Selos comemorativos da IX Olimpiada" (commemorative stamps of the 9th Olympiad), some foxing, very rare. (Image)