1970-1979
Poland 1971 -The 25th Anniversary of UNICEF (the United Nations Children's Emergency Fund)
Poland 1978 -International Philatelic Exhibition Praga 1978 in Prague, Czechoslovakia (Today: Czech Republic)
1977 The National Philatelic Exhibition in Sieradz commemorating the 60th Anniversary of the October Revolution and the 20th Anniversary of Space Conquest
Poland 1975 -The 6th Championship Light Indoor Athletics (Track and Field) in Katowice, Poland
Poland 1977 - International Philatelic Exhibition Amphilex '77 in Amsterdam, The Netherlands
Poland 1976 - The 100th Anniversary of Polish theatre in Poznan
1970 The 10th Congress of the International Olympic Academy
1978 The 30th Anniversary of the United Youth Movement
1974 Flower Drawings by Stanislaw Wyspianski
2015 UNESCO World Heritage - Wooden Tserkvas of the Carpathian Region. Joint Issue with Ukraine https://www.xe.com/currencyconverter/convert/?Amount=20&From=PLN&To=USD
1971 The 11th National Philatelic Exhibition in Szczecin - Sculptures