| Clue | Source | Date |
|---|---|---|
| Roman 204 | Canadiana | 19 Dec 2022 |
| 204 in Roman numerals | Newsday | 13 Jan 2020 |
| 204, to Caesar | Newsday | 27 Sep 2017 |
| Half of CDVIII | Jonesin | 11 Oct 2016 |
| 40% of DX | LA Times Daily | 11 Apr 2015 |
| 40% of DX | ||
| 40% of DX | ||
| Roman 204 | ||
| Early third-century year | ||
| One-fifth of MXX | ||
| LI quadrupled | ||
| LI quadrupled | ||
| One-fifth of MXX | ||
| Year in the reign of Pope St. Zephyrinus | ||
| 204, to Cato | ||
| MMXL ÷ X | ||
| 51 qvadrvpled? | ||
| Cato's 204 | ||
| XII times XVII | ||
| A fifth of MXX | ||
| Roman 204 | ||
| CII doubled | ||
| Third century date. | ||
| 204. |