To provide an accurate description and valuation of a coin, I would need specific details such as the coin's type (e.g., penny, dollar), year of minting, mint mark (if any), condition or grade (e.g., uncirculated, extremely fine), and any unique features or markings (such as errors, variations, or historical significance). Please provide this information, and I will gladly assist you in describing the coin and estimating its value.
| Country | United States of America |
| Year | 1840 |
| Serie | Patterns & Trial Coins |
| Denomination | Other / Varied |
| Mint | Philadelphia |
| currency | USD |
| currency-amount | 0 |
| diameter | 0 |
| height | 0 |
| mint-mark | P |
| mintage | 0 |
| type | Coins |
| weight | 0 |
| width | 0 |
| year-display | 1840 |
| year-type | Circa |