The inscription is on one of three altars found in the 19th century in the monastic church of San Miguel de Escalada in Gradafes (near Lancia in León, Iberian Peninsula). Fidel Fita (1898: 217, 218-221) identified the scripture of the inscription with the Visigothic style popular from the 7th century onwards. He also suggested that the altars might have been dedicated either in approximately AD 630, because he found it similar to the inscription in the church of San Claudio in León (Hubner 1871: n. 142), or possibly in AD 913 when Gennadius restored the church of San Miguel (Fita 1898: 218). Hubner supposed that the letters were incised in the 9th or 10th century according to the earlier exemplar from the 6th century (but it could not be earlier than 574, the year of the death of Saint Aemilian) or 7th century (Hubner 1900: n. 382).