Final Accepted Script Proposal
The script was introduced by a Russian missionary, Stepan Khrap, also known as Saint Stephen of Perm (Степан Храп, св. Стефан Пермский) in 1372. The name Abur is derived from the names of the first two characters: An and Bur. The script derived from Cyrillic and Greek, with Komi "Tamga" signs, the latter being similar in the appearance to runes or siglas poveiras because they were created by incisions rather than by usual writing. The inclusion of the latter aided the script to greater acceptance among the medieval Permic speakers of the time.
April 26, which is the saint's day of Stephen of Perm, is celebrated as Old Permic Alphabet Day.
The Abur inscriptions are among the oldest relics of the Uralic languages. Only one of them has earlier documents: Hungarian, which had been written using the Old Hungarian script first before the Latin script was used after 1000.
For comparison, Finnish as a written language appeared only after the Reformation in 1543. However, an isolated birch bark letter, found in 1957 in Novgorod and written in a Finnic language, has been dated to the beginning of the 13th century.
Lytkin's 1952 work is often considered the authoritative source of documentation for this script. There are 24 primary characters, along with 10 secondary characters that are subordinate to the primary characters. There are also some combining marks that may have been used for phonological purposes, in addition to some combining letters from Latin and Cyrillic that have been found as well. Spaces, middle dots, and semi-apostrophes have also been seen as punctuation in documents. A Cyrillic combining titlo is used to indicate numerals.
Old Permic (U+10350–1037F) was added to the Unicode Standard in June 2014 with the release of version 7.0.
Official Unicode Consortium code chart (PDF)