Song: "Rubber Duckie"
Artist: Ernie
Peak position on the Cashbox Singles chart: #13
Number of weeks on the Cashbox Singles chart: 10
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| August 8, 1970 | 84 | Rubber Duckie | Ernie | Columbia 45207 |
| August 15, 1970 | 70 | Rubber Duckie | Ernie | Columbia 45207 |
| August 22, 1970 | 52 | Rubber Duckie | Ernie | Columbia 45207 |
| August 29, 1970 | 35 | Rubber Duckie | Ernie | Columbia 45207 |
| September 5, 1970 | 25 | Rubber Duckie | Ernie | Columbia 45207 |
| September 12, 1970 | 20 | Rubber Duckie | Ernie | Columbia 45207 |
| September 19, 1970 | 15 | Rubber Duckie | Ernie | Columbia 45207 |
| September 26, 1970 | 13 | Rubber Duckie | Ernie | Columbia 45207 |
| October 3, 1970 | 13 | Rubber Duckie | Ernie | Columbia 45207 |
| October 10, 1970 | 54 | Rubber Duckie | Ernie | Columbia 45207 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.