unused Block of Four 12c. ultramarine, a lower right corner plate number block of four; some backing paper adhering to reverse and one with small thin, otherwise fine. S.G. J51
unused Block of Four 12c. ultramarine, a lower right corner plate number block of four; some backing paper adhering to reverse and one with small thin, otherwise fine. S.G. J51
unused Block of Four 12c. ultramarine, a lower right corner plate number block of four; some backing paper adhering to reverse and one with small thin, otherwise fine. S.G. J51
