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Hardy Boys, The (1970 - 1971)
Gold Key, 4 issues

Issue GD VG FN VF NM NM/MT
1
$29.90 $32.20 $39.10 $51.60 $85.70 $272.00
2
$12.50 $13.30 $16.80 $22.90 $34.40 $112.00
3
$14.00 $14.90 $18.20 $24.00 $46.40 $146.00
4
$14.20 $15.70 $18.60 $23.80 $40.30 $110.00