As of 2012 over 320 sigla for uncial codices have been catalogued by the Institute for New Testament Textual Research (INTF) in Münster, Germany.
Hingga 2012 lebih dari 320 siglum bagi naskah uncial sudah didaftar dalam katalog oleh Institute for New Testament Textual Research (INTF) di kota Münster, Jerman.