HN Italy 0152, Double-Denarius or 20 Asses, Etruria Populonia, Gorgoneion Blank 8g25 AM#0644-83, rare Etruscan issue
20 As. 220BC. 8.25grams. Populonia mint. **. Crawford IT/152 Populonia. Obverse: Gorgoneion. Reverse: blank. Scarce.
Gorgon on obverse with a value mark XX. This has long been speculated to reflect the Roman denarius value system and date from 210-215BC. Rutter argues it dates much earlier, whilst Vecchi argues for a denarius era dating.