Challengers of the Unknown (1958 DC 1st Series) Mark Jewelers 83MJ
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$5.60
View scan$4.00
$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.