Detail of the decoration of a theatre (?) with the allegorical figure of Prudence

Close-up of the decoration of a theatre(?); with, on the left, in front of a narrow window pier, a standing allegorical female figure with, on the base thereof, the inscription "PRUDENTIA". In front of a second wall surface: a candelabrum motif with two cherubs’ heads set in the base. On the right, above a segmental arch, a face mask and two birds which in their bills are clasping a small cloth (or banner?).