| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| 1977 s proof sets | 1.49 | 0.3 | 9853 | 78 | 17 |
| 1977 | 1.97 | 0.4 | 1944 | 37 | 4 |
| s | 0.31 | 0.4 | 7551 | 80 | 1 |
| proof | 0.31 | 0.5 | 6155 | 13 | 5 |
| sets | 0.15 | 0.7 | 1993 | 1 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| 1977 s proof set | 1.88 | 0.1 | 3832 | 46 |
| 1977 s proof set worth | 1.98 | 0.6 | 3500 | 17 |
| 1972 s proof set | 1.65 | 0.3 | 8798 | 5 |
| 1972 s proof set worth | 1.21 | 0.2 | 9932 | 45 |
| 1977 proof set worth | 1.72 | 0.8 | 2173 | 77 |
| 1977 proof set | 1.33 | 1 | 5542 | 73 |
| united states proof set value 1977 | 0.02 | 0.9 | 8740 | 42 |
| 1977 united states proof set | 1.35 | 0.3 | 5012 | 90 |
| 1977 united states proof set worth | 1.72 | 1 | 8572 | 99 |
| 1977 proof coin set | 1.29 | 0.1 | 3419 | 43 |
| 1977 us proof set value | 1.14 | 0.9 | 7834 | 19 |
| 1977 us mint proof coin set value | 1.22 | 0.6 | 2923 | 10 |
