| Year | 1987 |
| Date | 23-Jan |
| Volume | 158 |
| Issue | 3,793 |
| Page | 81 |
| Category | Smoke Rings |
| Part | |
| Title | Another Oddity Resolved (David Lammas; butterfly headed screw and body) |
| Author | Editor |
| Notes | Rubber or canvas motorcycle final drive belt hole punch. Ian Bradley's 1914 Triumph motorcycle |