Oil Painting On Copper On The Front St. Louis Praying On The Back Etched Image "aurora Consurge

Oil painting on copper on the front St. Louis praying on the back etched image "Aurora consurgens " biffata marked. There are no indications or attributions of the painting on the front, it is an 18th century Bolognese painter of fine quality and well preserved, while on the back of the etched plate there is the Assumption of the Madonna (painting) by Galli Giovanni Maria known as Giovanni Maria Bibiena (attributed) (17th century) and kept at the Opera Pia dei Poveri e Vergognosi in Bologna. The plate is biffed and marked in a not recent period.
Measure 15x21 cm ca.