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Secret Six (1968 - 1969)
National Periodical Publications, 7 issues
| Issue | GD | VG | FN | VF | NM | NM/MT |
|---|---|---|---|---|---|---|
| $9.10 | $18.10 | $34.90 | $79.40 | $288.00 | $1,570.00 | |
| $2.10 | $4.05 | $7.50 | $17.40 | $84.00 | $528.00 | |
| $3.25 | $5.90 | $11.20 | $26.50 | $139.00 | $606.00 | |
| $2.55 | $4.85 | $9.10 | $20.70 | $146.00 | $720.00 | |
| $2.80 | $5.80 | $10.90 | $25.50 | $149.00 | $606.00 | |
| $2.40 | $4.60 | $8.85 | $19.60 | $121.00 | $479.00 | |
| $2.30 | $4.85 | $8.15 | $18.70 | $108.00 | $485.00 |
