English: View of the so-called portable altar of Saint Andrew (Andreas-Tragaltar or Egbert-Schrein) in the treasury of Trier Cathedral, Germany. The reliquary contained a sandal of Saint Andrew, as well as the cup of Saint Helena, shackles from the chain of Saint Peter, some of his beard hair, and a nail of the Holy Cross (in a separate reliquary). The object is the most famous work in the Trier Cathedral treasury and a major work of the 10th-century Egbert workshop in Trier.