1855 - 20c light blue, 2nd plate, printing of '61,
1855
1855 - 20c light blue, 2nd plate, printing of '61, irregular block of 12, of which 10 without effigy, with untorn edge at right and below, all MNH. Six perfect stamps including the two with effigy. Very rare. cert. Manzoni (Sassone 15Da - Euro 14,250++ for the six perfect ones)