Italy: Airmail labels 2

Here is a nice non postal issue label from Italy.

Year: 6.1925, Gummed. Günter Mair's catalogue no: - ITA-C-2, perforated 11, sheets, issued at the occasion of the 12. Italian Philatelic Congress, Livorno, 28.6.1925, carmine-violet/white, 5*****