Old Coptic

[1] It "is an analytical category … utilised by scholars to refer to a particular group of sources" and not a language, dialect or singular writing system.

[2] They lack the consistent script style and borrowed Greek vocabulary of later Coptic literature.

[1][2][3] The earliest surviving examples of Egyptian words transliterated in Greek script date to the 6th century BC.

[4] The earliest stage of experimentation with the Egyptian language in the Greek alphabet is sometimes called Pre-Old Coptic or Graeco-Egyptian.

[6] The production of pagan magical texts written in Egyptian in Greek letters continued into the 4th or 5th century, after the start of Coptic literature proper.