Cover to Genova, franked with Ferucci 20c. + 25c. + 50c. ovpt. "COO" plus RODI Pittorica 30c. plus 50c. ovpt. "XXI Congresso Idrologico" (Hellas 45+55+59VII/61VII) plus Italian 5c. Imperiale, canc. "ANTIMACHIA * (COO) * 17.11.30", arr. slogan "GENOVA * CENTRO * 29-XI-30".