Elegant Paperweight in Bronze and Nero Portoro marble. Late 19th "Grand Tour" Specimen Marble Paperweight, Italian, Late 19th Century at Elegant Paperweight in Bronze and Nero Portoro marble. Late 19th Lot 1281 A 19th century millefiori paperweight dated. Nero Marquina paperweight with large centered micro mosaic of the Roman Colosseum. Grand Tour, Italy, 19th C. Style Number: B24A0096 Measurements 4. 37" long 0. 75" tall 3. 25" wide