| Gold (Aureus) | 25 denarii |
| Silver (Denarius) | 6 asses |
| Silver (quinarius) | 8 asses |
| Orichalchum (sestertius) | 4 asses |
| Orichalchum (dupondius) | 2 asses |
| Copper (as) | 4 quadrantes |
| Orichalchum (semis) | 2 quadrantes |
| Copper quadrans | 1/4 as |
In 294 under Diocletian, new denominations based on the Follis were used:
| Gold Aureus | 24 argentii |
| Silver Argentius | 5 AE Follis |
| Bronze follis | 5 antoninianus |
| Bronze antoninianus | 2 denarii |
During the middle of the 300’s, the coinage was in turmoil. We do not know what the Romans called their coins during this time so we now call the bronze coinage names based upon size:
| AE1 | Larger than 25mm diameter |
| AE2 | from 21mm – 25mm diameter |
| AE3 | from 17mm – 21mm diameter |
| AE4 | under 17mm diameter |
Periodically, John gives an informative yet informal talk about various topics geared toward youth, yet enjoyed by all. This fondness for sharing his knowledge has benefited the Central Florida public school system for more than 35 years where he continues to present hands-on talks to grades Kindergarten through 5th grade. These talks include such topics as Fossils, Rocks & Minerals, Dinosaurs, Crystals, Rocks, Minerals & Fossils of Florida and Ancient Roman Money. John works with the Boy and Girl Scouts working on the Geology and Coin Collecting Merit Badges (and belt loops and pins). He has also presented talks to a number of mineral, fossil and coin clubs.
John’s associations include membership in the American Numismatic Association (ANA) since 1979, membership in FUN (Florida United Numismatists), membership in CFCC (Central Florida Coin Club), membership in the Blue Ridge Numismatic Association, membership in Authentic Artifact Collectors Association (AACA), listed in Marquis’ Who’s Who since 2000 as well as Marquis’ Who’s Who in Science and Engineering since 1992.
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