The Sudarium and the Arca Santa - Cathedral of San Salvador, Oviedo

This is the Cathedral of San Salvador in Oviedo's own custodial account of the Sudarium and the Arca Santa, the reliquary chest housed with it in the cathedral's Camara Santa. As the custodian institution's own account it is the correct source for what the cathedral itself holds and claims about these relics, and for the plain fact of the custodial chain. Its limit is exactly that custodial character, it is the holding institution's own presentation, not an independent forensic or historical study of the relics' authenticity, so a claim about the Sudarium's actual age or origin needs an independent scholarly or scientific source rather than this custodial account.