The Dunbar & Company half eagle is incredibly rare, with only four reported examples. The first of these, the Smith/Brand/Lilly specimen, is impounded at the Smithsonian Institution. The Bell/Farouk/Carter specimen grades XF, and the Brand/Grandberg/Newcomer/ Walton specimen is an XF that was formerly mounted, with the initials JW scratched in the right obverse field. A single mint state example was discovered in Europe in the 1980s.
| Country | United States of America |
| Year | 1851 |
| Serie | Dunbar & Company |
| Denomination | G$5 |
| Mint | San Francisco |
| coinage-type | Pioneer & Territorial Gold |
| desg | MS |
| edge | Reeded |
| material | Gold |
| mintage | 4 known |
| ngc-id | 6J53 |
| obverse-description | Liberty Head with DUNBAR & Co. on diadem, 1851, 13 stars around |
| pcgs-link | 10183 |
| pcgs-number | 10183 |
| reverse-description | Federal Eagle encircled by S.M.V. CALIFORNIA GOLD. FIVE D. |
| variety | Dunbar & Co. |
| variety-2 | K-1 |
| year-display | 1851 |