Anthem Stamp Freaks and Errors
In philately, "errors, freaks, and oddities" or "EFO" is a blanket term referring to all the kinds of things that can go wrong when producing postage stamps. It encompasses everything from major design errors to stamps that are just poorly printed, and includes both some of the most sought-after and expensive of all stamps, and others that attract the attention of only a few specialists. Once the yellow-inverted error of the US 1962 Dag Hammarskjöld memorial stamp was discovered, 40,270,000 were printed to prevent speculation. An error is any sort of production mistake that is (potentially) replicated on many stamps; the famous Inverted Jenny is the best known of these, having resulted from a sheet of partial prints being accidentally re-inserted into the printing press upside down for the second color, resulting in an invert error. Design errors include wrong dates, wrong names, wrong pictures, anachronisms and the like. Only the original unintentionally printed ...