| 1967 | e Snowball NPS 2941 | - Snowy NPS 13532 |
| 1969 | e Snowball NPS 2941 | - Snow Simball NPS 14074 |
| 1970 | e Island Duke CSB 208, NPS 4978 | - Simple NPS 14615 |
| 1971 | e Island Duke CSB 208, NPS 4978 | - Susie VI NPS 14971 |
| 1972 | e Island Duke CSB 208, NPS 4978 | - Simnal NPS C 126 |
| 1973 | e Silver Snow NPS 3890 | - Simple Simon NPS G 595 |