Authenticating coins of the 'Roman emperor' Sponsian.

The 'Roman emperor' Sponsian is known only from an assemblage of coins allegedly found in Transylvania (Romania) in 1713. They are very unlike regular Roman coins in style and manufacture, with various enigmatic features including bungled legends and historically mixed motifs, and have lon...

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Main Authors: Paul N Pearson, Michela Botticelli, Jesper Ericsson, Jacek Olender, Liene Spruženiece
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2022-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0274285
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author Paul N Pearson
Michela Botticelli
Jesper Ericsson
Jacek Olender
Liene Spruženiece
author_facet Paul N Pearson
Michela Botticelli
Jesper Ericsson
Jacek Olender
Liene Spruženiece
author_sort Paul N Pearson
collection DOAJ
description The 'Roman emperor' Sponsian is known only from an assemblage of coins allegedly found in Transylvania (Romania) in 1713. They are very unlike regular Roman coins in style and manufacture, with various enigmatic features including bungled legends and historically mixed motifs, and have long been dismissed as poorly made forgeries. Here we present non-destructive imaging and spectroscopic results that show features indicative of authenticity. Deep micro-abrasion patterns suggest extensive circulation-wear. Superficial patches of soil minerals bound by authigenic cement and overlain by oxidation products indicate a history of prolonged burial then exhumation. These observations force a re-evaluation of Sponsian as a historical personage. Combining evidence from the coins with the historical record, we suggest he was most likely an army commander in the isolated Roman Province of Dacia during the military crisis of the 260s CE, and that his crudely manufactured coins supported a functioning monetary economy that persisted locally for an appreciable period.
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spelling doaj.art-1de8101a49504bb9a661cc746c75e1ef2022-12-24T05:33:07ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-011711e027428510.1371/journal.pone.0274285Authenticating coins of the 'Roman emperor' Sponsian.Paul N PearsonMichela BotticelliJesper EricssonJacek OlenderLiene SpruženieceThe 'Roman emperor' Sponsian is known only from an assemblage of coins allegedly found in Transylvania (Romania) in 1713. They are very unlike regular Roman coins in style and manufacture, with various enigmatic features including bungled legends and historically mixed motifs, and have long been dismissed as poorly made forgeries. Here we present non-destructive imaging and spectroscopic results that show features indicative of authenticity. Deep micro-abrasion patterns suggest extensive circulation-wear. Superficial patches of soil minerals bound by authigenic cement and overlain by oxidation products indicate a history of prolonged burial then exhumation. These observations force a re-evaluation of Sponsian as a historical personage. Combining evidence from the coins with the historical record, we suggest he was most likely an army commander in the isolated Roman Province of Dacia during the military crisis of the 260s CE, and that his crudely manufactured coins supported a functioning monetary economy that persisted locally for an appreciable period.https://doi.org/10.1371/journal.pone.0274285
spellingShingle Paul N Pearson
Michela Botticelli
Jesper Ericsson
Jacek Olender
Liene Spruženiece
Authenticating coins of the 'Roman emperor' Sponsian.
PLoS ONE
title Authenticating coins of the 'Roman emperor' Sponsian.
title_full Authenticating coins of the 'Roman emperor' Sponsian.
title_fullStr Authenticating coins of the 'Roman emperor' Sponsian.
title_full_unstemmed Authenticating coins of the 'Roman emperor' Sponsian.
title_short Authenticating coins of the 'Roman emperor' Sponsian.
title_sort authenticating coins of the roman emperor sponsian
url https://doi.org/10.1371/journal.pone.0274285
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AT michelabotticelli authenticatingcoinsoftheromanemperorsponsian
AT jesperericsson authenticatingcoinsoftheromanemperorsponsian
AT jacekolender authenticatingcoinsoftheromanemperorsponsian
AT lienespruzeniece authenticatingcoinsoftheromanemperorsponsian