"Micromosaic Grand Tour"
A beautiful micro-mosaic representation of the Pantheon, in Piazza della Rotonda, Rome. Estimated date mid-1800s. The depiction shows the two bell towers which were removed around 1883. The glass shards are set in a black marble panel, a paperweight with a brass handle. The condition is excellent. Overall, the sign measures 6.25 inches by 3.35 inches. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato