Koos de Jong
Country: Unknow : Apr 7, 1912
: 1948, 1952
Koos de Jong
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Koos de Jong Olympics Milestones
| Season | Event | Rank |
|---|---|---|
| 1952 | Men's Finn | 4 |
| 1948 | Men Single Handed Dinghy (Firefly) | B |
Country: Unknow | Season | Event | Rank |
|---|---|---|
| 1952 | Men's Finn | 4 |
| 1948 | Men Single Handed Dinghy (Firefly) | B |
