There is a Cyrillic letter so rare, multiocular O (ꙮ), that it is only used in the phrase “many-eyed Seraphim.” Pictured is its use in the Book of Psalms, 15th century
There is a Cyrillic letter so rare, multiocular O (ꙮ), that it is only used in the phrase “many-eyed Seraphim.” Pictured is its use in the Book of Psalms, 15th century