Fig. 1
From: Illuminating the Carolingian era: new discoveries as a result of scientific analyses

Saint Matthews’ portrait, Saint Riquier’s Gospels, folio 17v, Abbeville, MS004
From: Illuminating the Carolingian era: new discoveries as a result of scientific analyses

Saint Matthews’ portrait, Saint Riquier’s Gospels, folio 17v, Abbeville, MS004