From Enzo Cafaro (Italy): On March 23, 2023, Italy, the Sovereign Military Order of Malta (SMOM) and the Vatican issued each the same souvenir sheet bearing a single stamp at the occasion of the 100^th anniversary of the Italian Air Force. The souvenir sheets are showing planes, three-engine Savoia-Marchetti SM82, flying over the town of Rome, more precisely above the Vatican city. The items show also the logo of the anniversary and dates 1923 – 2023. The picture was provided from the SMOM archives.

At the same date, Italy issued also an isolated stamp with the same symbol of the anniversary and a souvenir sheet bearing 6 different stamps showing air force planes. These stamps are different from the common stamps and have not been taken over by the other postal administrations. Therefore, they cannot be considered as part of this joint issue.