In the most basic sense an error or flaw on a postage stamp can be a mistake made by the artist in the design of the stamp and also an error made in the production or manufacture of a stamp during it’s preparation and printing stages. These are often generally referred to as EFOs. Essentially a stamp error means that the stamp does not have the intended appearance as set out in the initial design idea – this could be incorrect wording or illustrations, missing features, mis-perforation, incorrect watermarks and missing or incorrect colours for example. Errors or flaws tend…