Cope

The cope  is a liturgical vestment, more precisely a long mantle or cloak, open in front and fastened at the breast with a band or clasp. 

A cope may be worn by any rank of the clergy, and also by lay ministers in certain circumstances. If worn by a bishop, it is generally accompanied by a mitre. The clasp, which is often highly ornamented, is called a morse. In art, angels are often shown wearing copes, especially in Early Netherlandish painting.

The Annunciation, Jan van Eyck

1434 - 1436

Oil transferred from wood to canvas.

The Archangel Gabriel wears a rich cope with a huge jewelled morse.