| Grade | PSA | CGC | Total | Price |
|---|---|---|---|---|
| 1 | - | - | - | |
| 2 | - | - | - | |
| 3 | - | - | - | |
| 4 | - | - | - | |
| 5 | - | - | - | |
| 6 | - | - | - | |
| 7 | - | - | - | |
| 8 | - | - | - | $6.76 |
| 9 | - | - | - | $29.06 |
| 10 | - | - | - | $70.36 |
| Total | - | - | - |
Population data for Ken Singleton #39 1981 Kellogg's comes from PSA and CGC.
The population counts are updated monthly.
Half grade populations are included in the nearest whole grade numbers. For example: 8.5 is counted in 8.
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