1851, 5 c. intense black, a used inter-pane ‘interspazio’ horizontal pair, with ample to large margins all round, lightly cancelled by the lozenge of dots in black, very fine and extremely rare: undoubtedly the finest of the three pairs recorded. Signed E. Asinelli. Cert. E. Diena (1987) (Sassone 1b = € 120.000,-)
