Small antique mirror in cracked ceramic with Commedia dell'Aigle mask decoration

Antique cracked ceramic mirror decorated with a commedia dell'arte mask and enhanced with a golden border. The mirror is fixed to the back with terracotta (a part is missing at the top but the mirror holds well). Wear related to the passage of time: blackened traces on the ceramic and pitted tin but no chips or cracks. Presence of an indecipherable stamp on the back (see last photo) 📐 35 X 30 cm.