The Shatberdi Codex, the oldest of the extant CoK manuscripts, was copied in 973 under the supervision of the monk John at the Georgian monastery of Shatberdi in what is now northeastern Turkey. It was discovered in 1888 and published in 1890 by the Georgian scholar Ekvtime Taqaishvili. The second variant, Chelishi Codex, so named after a monastery in Georgia where it was found in 1903, was copied in the 14th or 15th century. Following the 1975 fire at Saint Catherine's Monastery on Mount Sinai in Egypt, at least two hitherto unknown variants of CoK were discovered among a large number of Georgian manuscripts mainly dated to the 9th/10th century. They have not yet been completely studied, though.