 The cessation in supply of freshly struck coins didn't necessarily cause an immediate halt in the use of coinage.Numismatists and archaeologists have long been struck by the phenomenon of clipped "siliquae" from the early 5th century, though precise dates and explanations for it remain elusive.Clipping may have carried on into the middle of the 5th century, or been restricted to the 410s and 420s, and was perhaps carried out as a means of taxation by a government deprived of new supplies of coinage.