According to Teichman, this is now considered to be a mint error, struck on a dime planchet.
| Country | United States of America |
| Year | 1831 |
| Serie | Patterns |
| Denomination | P$ 2 1/2 |
| Mint | Philadelphia |
| coinage-type | Pattern |
| desg | PR |
| edge | Reeded |
| material | Silver |
| obverse-description | Regular 1831 die used to coin circulation strikes as well as Proof quarter eagles. |
| pcgs-link | 11175 |
| pcgs-number | 11175 |
| reverse-description | Regular die used to coin circulation strikes as well as Proof quarter eagles. |
| variety | Silver |
| variety-2 | J-49 |
| year-display | 1831 |