| Clue | Source | Date |
|---|---|---|
| Anniversary celebrated by a platinum jubilee | The Times Specialist | 19 May 2025 |
| Sixtieth, ..., eightieth | ||
| Around opening, one hammered sheet for platinum? | The Guardian Cryptic | 08 Dec 2022 |
| Platinum anniversary | The Guardian Quick | 06 Nov 2021 |
| Walt Whitman's "Queries to My _____ Year" |