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Nano‐CT evaluation of totally corroded coins: A demonstration study to determine if detail might still be discernible despite the lack of internal, non‐corroded, metal
Author(s) -
Bude R. O.,
Bigelow E. M. R.
Publication year - 2020
Publication title -
archaeometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 67
eISSN - 1475-4754
pISSN - 0003-813X
DOI - 10.1111/arcm.12589
Subject(s) - fragment (logic) , nano , valerian , identification (biology) , materials science , forensic engineering , geology , computer science , composite material , medicine , engineering , biology , traditional medicine , botany , programming language
Five unidentifiable, completely corroded ancient coins (three of which were large fragments), proven to lack any residual internal metal, were scanned by nano‐computed tomography (CT) to see if discernible detail might still be present. One fragment could be identified as an early fourth‐century Urbs Roma commemorative AE 3/4. Another fragment was a coin of either Valerian or of the joint rule of Valerian and Gallienus, which could be dated to the period 254–56 ce . The other three lacked discernible detail. This proof‐of‐concept study shows that nano‐CT scanning has the potential to allow non‐invasive identification of at least some totally corroded coins.