| Survival Estimate | |
|---|---|
| All Grades | 3,000 | 
| 60 or Better | 75 | 
| 65 or Better | 10 | 
| Numismatic Rarity | |
|---|---|
| All Grades | R-4.4 | 
| 60 or Better | R-8.2 | 
| 65 or Better | R-9.5 | 
| Relative Rarity By Type All Specs in this Type | |
|---|---|
| All Grades | 29 / 48 TIE | 
| 60 or Better | 19 / 48 TIE | 
| 65 or Better | 10 / 48 TIE | 
| Relative Rarity By Series All Specs in this Series | |
|---|---|
| All Grades | 49 / 81 TIE | 
| 60 or Better | 30 / 81 TIE | 
| 65 or Better | 14 / 81 TIE | 
Among the fifteen varieties known of the 1820 Large Cents, three are Overdates. All three come from different dies. Newcomb 1 is known as the Large Overdate (referring to the size of the date); Newcomb 2 and 3 are Small Date Overdates. PCGS recongizes any of these three varieties as overdates.
Of all the 1820 Major Variaties, the Small Date is the least common, followed by the 1820/19 Overdate. The most common Major Variety, by far, is the Large Date.