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VOCABULARY TERM: SECURITY EDGEHere's another entry from Dick Johnson's Encyclopedia of Coin and Medal Terminology. -Editor Security Edge. Edge treatment on a coin moreso than a medal, in which the edge is rendered more difficult to counterfeit. To some degree this is accomplished by a knurled or reeded edge; but to a greater degree by a lettered edge or engrailed edge. Some of the later were accomplished by applying design or lettering on the edge by the canneluring machine before the item is struck in a coining press with a smooth collar – which may slightly squeeze the edge but does not obliterate the sunken letters or symbols. See edge lettering and numbering.
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