The capitals of Celas probably predate carved sacred imagery and appeared at the same time as tomb sculpture. This piece is one of a group of remarkable capitals unique in Portugal and notable for their style and iconography depicting scenes from the life of Christ, the Virgin and the Saints. This capital, portraying the descent of the Holy Spirit upon the Virgin and the Apostles is rare because of the remarkably well preserved polychromy and the stylistic connection with the bas-relief figures on funerary inscriptions produced by the workshop of Coimbra. The figures are stiffly carved with heavy, vertical folds in the drapery and almost identical faces.