1850, 15 centesimi, machine paper, type III with extremely rare GUTTER MARGIN (Zwischensteg Ansatz) at right showing parts of the stamp from the neighbouring pane. Extremely fine with wide margins all around tied by CLUSONE / 10 MAR postmark on piece. Certificate Arnold Goller BPP: con 11,5 mm interspazio di gruppo...ottima qualita . ONLY THREE COMPLETE INTERSPAZIO DE GRUPPO ARE KNOWN OF THIS STAMP (priced in Sassone at 150.000 EUR). A great Lombardy-Venetia rarity which is much rarer than this stamp with Andreaskreuz. (Katalog-Nr.: 3y, Sassone 20e)