AUSTRIA -ITALIAN OCCUPATION - TRENTINO, 1918, 90h RED VIOLET WITH TRENTINO OVERPRINT MINT NEVER HINGED, #N46, pristine single in choice very fine condition, signed Alberto Diena and Raybaudi with the latter's 2004 certificate, rare in this condition, only 200 printed, cat. $4,500.00, Sassone #14 @ €7,800.00