One Penny Postage and Inland Revenue Stamps
1881
Printed first day cover
1986
First day cover and 5 schilling stamp featuring Dr Erwin Schrodinger 1887-1961
1987
First day special postal issue 12 August 1982
1982
Grimsel reservoir
1949
First Day Cover commemorating the Post Office Tower
1965
Cocoa Research Institute 1942-1967
1968
1 shilling stamp (used) overprinted COMPAC CABLE IN SERVICE
1963
2 Sol airmail stamp (used) Monumento al Agricultor Indigena
1952
The First Schneider Trophy Race
2002
Progress in Electronics
1973
Women of Achievement
1996
First Day Cover commemorating the 20th International Geographical Congress
1964
First day stamp issue
1983
Centenary of the International Telecommunication Union (1865-1965)
1965
Commerce and Prosperity
1951
150th anniversary of public railways
1975
RMS Queen Elizabeth 2
1969
First Man on the Moon
1969
6 cents stamp (used) HemisFair '68 [map of the Americas] issued in United States of America (USA)
1968
Amateur Radio
1964
The Arkansas River Navigation
1968
Coal
1978
Crusade Against Cancer, early diagnosis saves lives
1965
Tobacco
1966
First Day Cover commemorating Free Trade within the European Free Trade Association (EFTA)
1967
Logging
1955-1959
Verbois hydro-electric power station
1949
First Day Cover commemorating Joseph Lister's Centenary
1965
First Day Cover commemorating British Discovery and Invention
1967
10 cents stamp (used) (one from a set of four) celebrating the Swiss National Exhibition
1964
4 kopeks stamp (used) commemorating the 22nd Communist Party Congress
1961
40 cents stamp (used) commemorating the European Postal and Telecommunications Conference EUROPA
1959
kopeks stamps
1960
70 centimes stamp (used) Charte Europienne de l'eau commemorating the European Water charter
1967
Diamond mining
1959
2 1/2d stamp (used) Commemoration of Victory
1946
40 cts stamp (used) commemorating 25 years of peace (XXV Anos Le Paz)
1964
Stamp sheetlet
2000
First day cover
1966
Main Suigas plant
1955-1956
60 milliemes stamp (used) Zueitina oil terminal and tanker with pipeline map through desert issued by Libya
1968
First day special postal issue
1984
Commemorative cover issued by the Chemical Society on 7 November 1974
1974
Set of stamps
1962
Set of two stamps (used) 6 cents National Rubber Research Conference 1960 [map of Malaysia with rubber plant seedling]
1960
3d stamp
1967
The epic voyage of Sir Francis Chichester
1967
Robert Owen
1976
International Labour Organisation
1969