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Authenticating coins of the ‘Roman emperor’ Sponsian

Fig 7

High magnification electron microscope images of exposed upper areas on the obverse of the six coins.

The two unquestionably genuine coins are at the top: A) GLAHM:29540; B) GLAHM:29697; C) GLAHM:29596; D) GLAHM:29820; E) GLAHM:29821; F) GLAHM:40333.

Fig 7

doi: https://doi.org/10.1371/journal.pone.0274285.g007