Basilica of Saint Apollinaire in Classe, wall mosaic decoration, apse half-dome: Transfiguration. Christ is represented by the jewelled cross framed in the blue clypeus, which is decorated with 99 golden stars; god’s figure is depicted on the small medallion on cross centre. Inscriptions are on clypeus extremities: greek word “ixzus” is on top, latin expression “salus mundi” is under cross base, greek letters alpha and omega are beside cross branches. Moses and Elijah appear from clouds sideways central clypeus.