Great Britain 1973 3p British Explorers (David Livingstone and Henry M Stanley) error, SG 923/4c.
A superb unmounted mint, with full original gum, se-tenant pair with turquoise-blue (background and inscription) omitted
A very scarce and visual QEII error. Pierron records 60 mint pairs.
SG Catalogue Value: £1,900+.
