Great Britain 1998 26p 1926 Sunbeam error, SG2060aGreat Britain 1998 26p 'Sir Henry Segrave's Sunbeam 1926' error of missing value, SG2060a. Superb, Post Office fresh, unmounted mint, with full original gum corner marginal cylinder block of ten with face value "26" omitted on the two stamps from column 4. The error, which results in the loss of the face value, occurred on the fourth column of several sheets. Some examples have the colour rosine (the value) completely missing while others show one of