BIBLIOGRAPHY
K. Butcher & M. Ponting, The Denarius in the First Century/The Reforms of Trajan and the End of the Pre-Neronian Denarius(AIIN 61, 2015, pp. 21〜42)
Kevin Butcher・Matthew Ponting

Claims Supported by This Source
- Nero's reform, c. 63–65 (commonly dated to 64, but without conclusive evidence; AIIN 61, 2015).
- The reduction was sharper than previously thought, to about 80% silver (previous theories suggested about 93%).
- A second reform c. 68 increased the silver content from 80% to 90% (AIIN 61, 2015).
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