Legal Chemistry And Scientific Criminal Investigation Electronic
Legal Chemistry And Scientific Criminal Investigation Electronic
A Alfred Lucas
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Cast coins are generally much poorer imitations than struck coins and hence are more easily detected. A really first-class casting, however, with good milling, which fortunately is rarely met with, is very difficult to detect, more especially if it is worn, since even the smallest details of the design are correct. The surface of a cast coin is frequently pitted and uneven, the edges of the lettering and design are rounded instead of being sharp, there are little projections of metal where the ...lines should be straight and, in that section of the circumference from which the "runner" has been removed, the milling is irregular or defective and often shows evidence of having been made or adjusted with a file. Sometimes, however, the runner is so skilfully taken off and the milling so cleverly adjusted that, if the casting has been well done, it is difficult to say whether the coin has been cast or struck. A large proportion of the counterfeit coins made in Egypt are struck and many are excellent imitations.
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