| Codice di rarità | Spiegazione | |
| (1) | Extremely common | |
| (2) | Very common | |
| (3) | Common | |
| (4) | Scarce | |
| (5) | Very scarce | |
| (6) | Rare | |
| (7) | Very rare | |
| (8) | Extremely rare | |
| (9) | Exceedingly rare | |
| (10) | Of the greatest rarity | |
| (*) Da Sydenham, The Coinage of the Roman Republic, pag. xiv. | ||