Lot of 4 picture postcards with aviation and military subjects

Lot of 4 picture postcards with aviation and military subjects
Early decades of the 20th century
The postcards feature coats of arms and insignia of Italian aviation departments on the front, with legible inscriptions '1st Fighter Wing,' '21st Bombardment Squadron,' and 'Bombardment Aviation School,' accompanied by mottos in Latin language shown inside the emblems. Untraveled postcards on verso, with typographical subdivision by correspondence and address, lacking handwritten text, stamps, or postmarks; unfilled postage boxes present. No visible editorial indications, printer's marks, place of printing, or date. Overall good condition, with natural patina of time, slight scattered browning, sporadic blooming, and minimal traces of use at edges and corners, consistent with the era.
10.5x15 cm.