April 2012
Numismatist;Apr2012, Vol. 125 Issue 4, p99
The article offers information on spark-erosion counterfeit coins. Spark erosion uses electricity to shape metal objects, such as coinage dies. Spark-eroded dies have rough or porous surfaces and counterfeiter often polishes his dies heavily to remove this granularity. Many sparkerosion counterfeits can be found in old-time collections.


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