Vat. iber. 4, a membrum disjectum of the manuscript Sin. geo. 49, contains on two of its folios the Syriac Gospel text as the lowest layer (scriptio ima) within a double palimpsest. Comparison with known Syriac versions of the extant text – Matt 11.30–12.26 – shows that the text represents the Old Syriac version, and is particularly akin to the Curetonianus (Syc). On palaeographic grounds, the original Gospel manuscript can be dated to the first half of the sixth century. The fragment is so far the only known vestige of the fourth manuscript witness to the Old Syriac version.