Catalogue of the Syriac mss. in the Convent of Saint Catharine on Mount Sinai

The Syriac Sinaitic (syrsin), known also as Sinaitic Palimpsest, of Saint Catherine's Monastery, Mount Sinai is a late 4th century manuscript of 358 pages, containing a translation of the four canonical gospels of the New Testament into Syriac, which have been overwritten by a vita (biography) of female saints and martyrs with a date corresponding to AD 778. This palimpsest is the oldest copy of the gospels in Syriac, one of two surviving manuscripts (the other being the Curetonian Gospels) that possibly predate the Peshitta (although this is debated), the standard Syriac translation of the Bible. - Wikipedia