Examination of the metalwork associated with Charles the Bald's donation to the treasury of Saint Denis: the paten of Saint Denis (Louvre, paris), the mounting of the so-called cup of the Ptolemies (destroyed-, the escrain de Charlemagne (crest, Cabinet des Médailles, Bibliothèque Nationale, Paris), and the altar frontal of Saint Denis (destroyed). Attributes the metalwork to goldsmiths of Charles the Bald, perhaps a Saint Denis workshop. Argues that the technique of cloisonné goldwork continued to be employed in the middle and second half of the 9th century. -- AATA