Know what you have.
PlainCoin helps you identify selected US coins, check the date and mint mark yourself, and see where every number comes from. If we don't have reliable sales data, we say so.
What a result looks like
Example layout. Numbers come from our sources at the time you check.
| Value | Basis |
|---|---|
| Face value $0.25 | The coin's denomination |
| Silver content estimate | Standard silver weight × dated spot quote, with the provider and time shown |
| Market range | Shown only with reliable, licensed sales data. Unavailable at launch. |
Supported coins
Ordinary business strikes only. Proofs, special mint sets, error authentication and grading are out of scope.
- Lincoln Memorial cent, dated 1959–2008
- Roosevelt dime, dated 1946–2025
- Washington silver quarter, dated 1932–1964
Exact coverage, including mint marks
How it stays honest
- You confirm the date and the mint mark before any value appears.
- Every number shows its basis and source. AI never sets a price.
- Uncertain identities stay uncertain. Checklists help you look closer; they are not detections.