Inverted Centre on Definitive Issue of 1902
According to L.N. Williams the term "vignette" is often used with reference to the stamp's central and most prominent feature (101); he procedes to explain that, strictly speaking, a "vignette" has shading around the edges to help blend the design into the surrounding paper (108).
The inverted vignette of Somalis on a camel on this 1902 definitive is, according to the Standard Postage Stamp Catalogue, the product of a fraudulent printing done in Paris. Imperforates, transposed colours and inverted centres exist for most of the 1902 and 1903 issues.