| Clue | Source | Date |
|---|---|---|
| Nacre | The Times Concise | 01 Oct 2023 |
| Shiny layer from flap o' the ormer possibly? | The Times Cryptic | 10 Aug 2023 |
| Shiny shell layer in redesigned porthole frame | The Times Cryptic | 18 May 2023 |
| Nacre | The Times Concise | 21 Jun 2022 |
| Layer of molluscs damaged porthole frame |