The Apse Mosaic at Santa Cecilia in Trastevere: Detail, the right side
St. Peter is on the left with the keys that are his attribute. As usual he has a short, square beard. With him are St. Valerian, and St. Cecilia, martyrs who are bringing their crowns to the throne of Christ.
View the whole apse.
Photographed at the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.