Niccolo di Liberatore ("L'Alunno")
Altarpiece of the Coronation of the Virgin: Detail, St. Sebastian

In most portraits St. Sebastian is nearly naked and the arrows are stuck in his body, but there are a few like this one where he is dressed and simply holds the arrows in his hand. This portrait does follow the tradition of picturing Sebastian as a handsome youth.

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Photographed at the Pinacoteca Vaticana by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.