1864, Isabella II 4 cuartos rose on reddish buff, complete sheet of 100 with 2 blocks of four, horizontal pair and a single, all in vivid colour and with ample to huge margins, used with black cds “MALLORCA 18 NOV 64” on large format envelope to Palma. Some mostly light creasing and few faults, still remarkably well preserved for the size. A spectacular rarity; the only recorded complete sheet of any classic imperforate stamp on cover.
