A
- More...
- Abkhazia
- Adygeya
- Adzharia
- Aegean Islands
- Afars and Issas
- Afghanistan
- Aitutaki
- Ajman
- Åland
- Albania
- Alderney
- Algeria
- Altai
B
- More...
- The Bahamas
- Bahrain
- Bangladesh
- Barbados
- Barbuda
- Bashkiria
- Basutoland
- Bechuanaland Protectorate
- Belarus
- Belgian Congo
- Belgium
- Belize
- Benin
C
- More...
- Cambodia
- Cameroun
- Canada
- Canouan
- Cape Verde
- Cayman Islands
- Central African Republic
- Central Lithuania
- Ceylon
- Chad
- Chechnya
- Chile
- People's Republic of China
- Republic of China
- Christmas Island
D
- Dagestan
- Dahomey
- Danzig
- Davaar Island
- Denmark
- Djibouti
- Dominica
- Dominican Republic
- Dubai
E
- Ecuador
- Egypt
- El Salvador
- Equatorial Guinea
- Eritrea
- Ethiopia
F
- Falkland Islands
- Falkland Islands Dependencies
- Farœ Islands
- Fernando Po
- Fiji
- Finland
- France
- French Equatorial Africa
- French Polynesia
- French Southern and Antarctic Territories
- Fujeira
G
- More...
- Gabon
- Gagauzia
- The Gambia
- Georgia
- German Democratic Republic
- German Rocket Society
- Germany
- Ghana
- Gibraltar
H
- Haiti
- Honduras
- Hong Kong
- Hungary
I
- Iceland
- Ifni
- India
- Indonesia
- Ingushia
- Inhambane
- ITU
- Interplanetary Postage
- Iran
- Iraq
- Ireland
- Isle of Man
- Israel
- Italian Colonies
- Italy
- Ivory Coast
J
- Jaipur
- Jamaica
- Japan
- Jasdan
- Jersey
- Jordan
K
- Kalmykia
- Karabach
- Karelia
- Karelia (modern)
- Kathiri State
- Kazakhstan
- Kenya
- Khakassia
- Khor Fakkan
- Kiribati
- Komia
- North Korea
- South Korea
- Kuril Islands
- Kuwait
- Kyrgyzstan
L
- Laos
- Latvia
- Lebanon
- Lesotho
- Liberia
- Libya
- Liechtenstein
- Lithuania
- Lourenco Marques
- Luxembourg
M
- More...
  - Marshall Islands
  - Mauritania
  - Mauritius
  - Mexico
  - Micronesia
  - Moldova
  - Monaco
  - Mongolia
  - Montserrat
  - Mordovia
  - Morocco
  - Mozambique
- Macao
- Macedonia
- Madagascar
- Madeira
- Mahra State
- Malawi
- Malaysia
- Maldive Islands
- Mali
- Malta
- Manama
- Manchukuo
N
- More...
  - New Hebrides
  - New Zealand
  - Newfoundland
  - Nicaragua
  - Niger
  - Nigeria
  - Niuafo'ou
  - Niue
  - Norfolk Island
  - Norway
  - Nyasaland
- Nagaland
- Nakhichevan
- Namibia
- NASA Local Post
- Nauru
- Nepal
- Netherlands
- Netherlands Antilles
- Nevis
- New Caledonia
O
- Oman (State)
- Oman
- North Ossetia
- South Ossetia
P
- Pakistan
- Palau
- Panama
- Papua New Guinea
- Paraguay
- Penrhyn
- Peru
- Philippines
- Pitcairn Island
- Poland
- Portugal
- Portuguese Africa
- Portuguese Congo
- Portuguese Guinea
- Portuguese India
Q
- Qatar
- Qu'aiti State In Hadhramaut
- Quelimane
R
- Ras Al Khaima
- Réunion
- Rhodesia
- Rio Muni
- Romania
- Ross Dependency
- Russia
- Rwanda
- Ryukyu Islands
S
- More...
  - More...
  - Saudi Arabia
  - Senegal
  - Serbia
  - Serbia and Montenegro
  - Seychelles
  - Sharjah
  - Sierra Leone
  - Singapore
  - Upper Slobbovia
  - Slovakia
  - Slovenia
  - Solomon Islands
  - Somalia
  - Somali Coast
- Saar
- Saint Helena
- Saint Kitts
- Saint Kitts-Nevis
- Saint Lucia
- Saint Pierre and Miquelon
- Saint Thomas and Prince Islands
- Saint Vincent
- Saint Vincent Grenadines
- Samoa
- San Marino
- Sanda Island
T
- Tajikistan
- Tanzania
- Tatarstan
- Thailand
- Timor-Leste
- Togo
- Tokelau
- Tonga
- Trinidad and Tobago
- Tristan Da Cunha
- Tunisia
- Turkey
- Turkish Republic of Northern Cyprus
- Turkmenistan
- Turks and Caicos Islands
- Tuva
- Tuvalu
U
- Udmurtia
- Uganda
- Ukraine
- Umm Al Qiwain
- Union Island
- Union of Soviet Socialist Republics
- United Arab Emirates
- United Kingdom
- United Nations (Geneva)
- United Nations (New York)
- United Nations (Vienna)
- United States of America
- Upper Volta
- Uruguay
- Uzbekistan
V
- Vanuatu
- Vatican City
- Venezuela
- Victoria
- Vietnam
- South Vietnam
W
- Wallis and Futuna Islands
- Western Australia
- WMO
Y
- Yemen Arab Republic
- Mutawakelite Kingdom of Yemen
- People's Democratic Republic of Yemen
- Yemen
- Yugoslavia
Z
- Zaire
- Zambia
- Zil Elwannyen Sesel
- Zimbabwe
Sections
- New Additions
- Search by topic
- Search by issue date
- Space in the News
- See a Random Page
- Frequently Asked Questions
- Email Ed
Shop
- Amazon aStore
- Stamp Shop
- Delcampe Lots

Find other stamps on these topics:

Explore the Web to learn more about:

31 August 1972

Mount Calan Observatory, a comet and a telescope

Scott #426