1951 Republic of San Marino air mail stamp no. 97 view of San Marino Lire 500 brown printed in mini sheet of no. 6 stamps rotogravure watermark winged wheel, variety brown printing shifted up and oblique unique known and not catalogued 1 mini-sheet new, trimmed left with a slight crease in the top left corner, mint and never hinged, Sorani certificate. Catalogue Sassone MS no. (12d), Euro (7000.00).