Carl Gustav Heraeus [de], the numismatist who originally received many of the coins purportedly from the Transylvanian hoard, classified a piece bearing the image of Gordian III as a forgery immediately upon receiving the collection in March 1713.[7][3][1] Deahl also notes that eighteenth-century forgers were sophisticated enough to add wear marks to their coins, which they created by placing them in bags with other coins, and handling them to simulate normal usage.
"Ein siebenbürgischer Goldmünzenfund aus dem Jahre 1713". Blätter für Münzfreunde [de] (in German). 58: 425–428. 1923.
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