The 11th Pan-American Ophthalmological Congress 1977
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1977
The 11th Pan-American Ophthalmological Congress
23. marts VM: Ingen Arkstørrelse: 50 Gravering: Casa de Moneda de Chile. Perforeringer: 15
![[The 11th Pan-American Ophthalmological Congress, type XE]](https://www.stampworld.com/media/catalogue/Chile/Postage-stamps/XE-s.jpg)
