| Year | 1989 |
| Date | 07-Jul |
| Volume | 163 |
| Issue | 3,852 |
| Page | 18 |
| Category | Countryman's Steam |
| Part | 11 |
| Title | Superba. Fowler Class Z7 and Superba Ploughing Engine in 2 in. scale |
| Author | John Haining |
| Notes | A correct coiling gear, full size drum mount, scale gear cutting, epicyclic coiling gear, ploughing rope length |