Bolivia

1979 Airmail – The 100th Anniversary of the Death of Rowland Hill & Football World Cup – Argentina ’78

1979 Airmail – Football World Cup – Argentina ’78 & Spain ’82

1979 Avition History & the 75th Anniversary of ICAO

1979 International Year of the Child

1978 The 50th Anniversary of the Bank of Bolivia

1978 Airmail – Charles Lindbergh and Zeppelin Letter

1978 Airmail – The 25th Anniversary of the Coronation of Queen Elizabeth II

1978 The 50th Anniversary of Lufthansa & Football World Cup – Argentina

1978 The 75th Anniversary of the Nobel Prizes

1978 International Stamp Exhibition “PHILASERDICA ’79” – Sofia, Bulgaria