Challengers of the Unknown (1958 DC 1st Series) Mark Jewelers comic books
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Issue #81MJ
$8.00
Mark Jeweler Advertisement Insert Variant. First 35-cent cover price. New stories begin again: "Multi-Man's Master Plan." Script by Gerry Conway, pencils by Mike Nasser, inks by Bob Wiacek. Nasser/Neal Adams inks. Cover price $0.20.
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Issue #83MJ
$4.00
Mark Jeweler Advertisement Insert Variant. Brief Swamp Thing appearance in "Seven Doorways to Destiny!" Script by Gerry Conway, pencils by Keith Giffen, inks by John Celardo. Rich Buckler/Joe Rubinstein cover. Cover price $0.35.
