St. Mark the Evangelist on St. Andrew's Altar (c.980)
Enamel panel of St. Mark the Evangelist on St. Andrew's Portable Altar, made c.980 AD in Trier. This fascinating reliquary altar enshrines a sole of St. Andrew the Apostle's sandal. This relic is one of those said to have been brought from the Holy Land to Trier by Empress Helena in the 4th century. The splendid reliquary was commissioned by Archbishop Egbert (977-93), who had a special devotion to Saint Andrew.