The world’s oldest astro stamps
Pre-1940

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1887

Brazil

84 

Southern Cross 

1890

Brazil

89–110a 

Southern Cross 

1890

Brazil

N119, N123a, N127

Southern Cross
(newspaper stamps)

??

Brazil

—

Southern Cross 

1894

Brazil

124–126, 232

Sugar-loaf mountain

and star 

1898

Brazil

182–184

Southern Cross 

(1890 newspaper stamps surcharged) 

1899

Brazil

190–196

Southern Cross 

(1890 issues surcharged) 

1921

Central Lithuania

39, 39a

Poczobut Observatory 

1923

Poland 

199, 201 

Nicolaus Copernicus 

1928

Netherlands 

376a

Christiaan Huygens

1930

Brazil

489

Columns and Southern Cross 

1930

Italy

303

Flying boats and

Southern Cross

1932

Estonia 

95, 97 

Tartu Observatory

1933

Cyrenaica

108, 109

Ursa Major and 

Ursa Minor

1933

Italy 

PE 373

Galileo 

(pneumatic post)

1934

Iceland

210, 211

Monoplane and aurora

1936

Ecuador

529–533

La Condamine expedition

1939

Slovakia 

—

Milan Štefánik