1851 - 20c dark blue, 1st printing, pen-cancelled 'SOSPELLO 19 FEB 51' (DC rosette - Nice) to Nice Maritime. Cert. Bottacchi and E.Diena (full signature). E.Diena states: “…I am not aware of any other example of this stamp cancelled by pen.' (Sassone 2c+pt.R2 - Euro 44,500)
