An Onyx and glass Roman souvenir micromosaic plaque.
A rare depiction of Saint Peter's Square during an audience with the Pope. Mounted in a leather case. 4.7 x 3.9 cm.
Rome, late 18th/early 19th C.
Provenance
Private collection, South Germany; purchased in 1981 from Kunsthandel Wager & Ahrend, Munich.