William Dunham
| Item | PCGS No. | Date | Denom | Grade | Pop | Pop Higher | Owner's Comments |
| Liberty $20, No Motto (1850-1866) | 9075 | 1863 | $20 | PR65 | 0 | 0 | Estimated grade. Sold by B. Max Mehl Jun '41 price realized $250 |
| Liberty $20, "TWENTY D." (1866-1876) | 8963 | 1872 | $20 | MS65 | 0 | 0 | Estimated grade. Sold by B. Max Mehl Jun '41 price realized $43.5 |
| Liberty $20, "TWENTY DOLLARS" (1877-1907) | 9096 | 1880 | $20 | PR65 | 0 | 0 | Estimated grade. Sold by B. Max Mehl Jun '41 price realized $110 |
| St. Gaudens $20, High Relief (1907) | 9135 | 1907 | $20 | MS64 | 1044 | 409 | Estimated grade. Sold by B. Max Mehl Jun '41 price realized $43.75 |
| St. Gaudens $20, No Motto (1907-1908) | 9141 | 1907 | $20 | MS65 | 2158 | 403 | Estimated grade. Sold by B. Max Mehl Jun '41 price realized $41.5 |
| St. Gaudens $20, Motto (1908-1933) | 9205 | 1908 | $20 | PR65 | 8 | 1 | Estimated grade. Sold by B. Max Mehl Jun '41 price realized $67.5 |
