1952 San Marino, commemorative air mail stamp Lire 200 polychrome dedicated to the 4th Philatelic Day San Marino-Riccione, subject aeroplane in flight, Mount Titano and beaches of Riccione in a triangle in the centre, on the sides cyclamens and roses in mini sheet of no. 6 copies. 1 mini-sheet new, perfect and never hinged, Cilio certificate. Catalogue Sassone n. 14, Euro 1300.00.