MICROMOSAIC, ROME, XIXTH CENTURY depicting St. Peter's Square in the Vatican within malachite reserve on a Belgian black plaque, modern gilded wooden frame; minor defects, a few scratches, the frame not contemporary Diam. cm 14 (the plaque, cm 21X21) Frame, cm 31,5X31,5 A MICROMOSAIC, ROME, 19TH CENTURY; MINOR DEFECTS, FEW SCRATCHES, FRAME NOT COEVAL