on 3d. green, unused with small part original gum (disturbed) and of fine appearance; thin spots. B.P.A. Certificate (1998). S.G. 24, £1100. Photo" /> unused 2d. in black on<I> "Six/Cents"</I> on 3d. green, unused with small part original gum (disturbed) and of fine appearance; thin spots. B.P.A. Certificate (1998). S.G. 24, £1100. Photo | Christie's