January: Professor Paul Munroe, "Fabrication methods for ancient Italian coinage"
This paper looks at the structure of coins minted in Southern Italy (Sybaris) sometime between 540 and 510 BC. Little is known about the preparation methods of these coins. Were they directly cast, a common minting practice at that time, or were "blank" coins prepared and then mechanically forged on dies to imprint detail. Analysis by electron microscopy and neutron diffraction clearly shows such coins were hot forged and underwent recrystallization.
Read the full article, "An incuse stater from the series 'Sirinos/Pyxoes'", as published in the Journal of the Numismatic Association of Australia, Volume 26, pp 36-53, 2015.