English: Ephrem's Commentary on the Diatessaron. Parchment. Syriac, estangela script. Egypt, late 5th or early 6th century (first ten folios of this manuscript reproduce an exchange of letters between Severus of Antioch and Julian of Halicarnassus and it was written in a mixture of estrangela, nestorian and serta scripts in the 8th or 9th century in Egypt). Chester Beatty Library Syc 709