| 1970 | e MacNamara CSB 175, NPS 4259 | - Carna Apollo XIII NPS 5270, NPS G 422 |
| 1972 | e Lammermuir White Rebel NPS 5152 | - Carna Corona Borealis NPS 15063 |
| 1973 | e Lammermuir White Rebel NPS 5152 | - Corona Arcturus NPS C 160 |
| 1974 | e Leam Bobby Finn CSB 297, NPS 5217 | - Corona Polaris NPS 15934 |
| 1975 | e Dunmacreena CSB 270, NPS 5972 | - Corona Pegasus NPS G 907 |
| 1976 | e Dunmacreena CSB 270, NPS 5972 | - Corona Perseus Ge 17 |
| 1977 | e Kirtling Brigadoon NPS 6347, CSB 625 | - Corona Orion Ge 110 |