The minisheet was issued by Russia in 2000
honors twelve Russian scientists of various kinds. On the middle stamp
of the third row from the top the scientist honored is Yuri
Valentinovich Knorozov (1922-1999) who recognized, in the 1950s, that
the Mayan glyphs did not represent an alphabet, but rather a
syllabary. The stamp features several Mayan glyphs. Some of them also
appear in the upper margin of the minisheet.