1874 - 10c ochre-orange, block of ten with sheet m

 1874 - 10c ochre-orange, block of ten with sheet margins on three sides, showing plate number '86' above the second upper copy, MNH, all copies well centred. Unique. Cert. E.Diena (1986): 'Previously it was unknown that this value had been printed in sheets comprising adjoining groups' (Sassone 1 – Euro 16,300+)