Balbo Transatlantic Mass Formation Flight by Savoia Marchetti S-55X Flying Boats.
Composition of the series:
5,25 + 19,75 L. policromo in brace
5,25 + 44,75 L. policromo in brace
For a total of 2 stamps
Composition of the series:
5,25 + 19,75 L. policromo in brace
5,25 + 44,75 L. policromo in brace
For a total of 2 stamps