The Procession of Martyrs at Sant'Apollinare Nuovo: Detail: St. Clement
Church of Sant'Apollinare Nuovo, Ravenna<
This is a detail from the panel of Christ Enthroned. See my page on that panel for comments on St. Clement and his place in the procession.
This image in full resolution
Also see the entire right wall of the nave.
More of St. Clement
Photographed t the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.