In two issues of the 1962 volume of The Cartophilatelist
(VIII:3:44, VIII:5:100) the 2.25 value of a set issued in 1962 by
Seychelles is described as an error because the large island east of
southern Africa is named "Madagascar" instead of Malagasy.
An independent source (http://www.embassy.org/madagascar/names.html)
point out that
Malagasy (pronounced Mal-gash and written Malgache in French) is an
adjective and a noun used of the people and the language, while the
island's name is Madagascar in English, French and other languages,
and Madagasikara in the Malagasy language. All the names on the stamp
are geographical rather than political, so Madagascar is not an error.
As further confirmation see the stamp issued by the Democratic
Republic of Malagasy below.