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Add to cart VG 4.0 $399.95 or Best Offer This is a consignment item. A 3% buyer's premium ($12.00) will be charged at checkout. It has been graded by MyComicShop's experienced graders. Other items consigned by humble cow

Cover by pencils Mike Sekowsky, inks by Murphy Anderson. 2nd appearance of the Justice League of America in "Challenge of the Weapons Master!" Script by Gardner Fox, pencils by Mike Sekowsky, inks by Bernard Sachs and Joe Giella; Having found an ancient book that appears to indicate that he once defeated the JLA, Xotar travels from 11,960 to the present to test four weapons against the Justice League, in order to determine which weapon will help him defeat the Intersolar Police of his own day; But the JLA counters each of Xotar's weapons and returns him to face justice in his own time. 36 Pages, Full Color. Cover price $0.10.

Add to cart GD 2.0 $165.00 2.5" Cumulative spine split. Cover detached at one staple. Water damage.

Cover by pencils Mike Sekowsky, inks by Murphy Anderson. 2nd appearance of the Justice League of America in "Challenge of the Weapons Master!" Script by Gardner Fox, pencils by Mike Sekowsky, inks by Bernard Sachs and Joe Giella; Having found an ancient book that appears to indicate that he once defeated the JLA, Xotar travels from 11,960 to the present to test four weapons against the Justice League, in order to determine which weapon will help him defeat the Intersolar Police of his own day; But the JLA counters each of Xotar's weapons and returns him to face justice in his own time. 36 Pages, Full Color. Cover price $0.10.

Add to cart CGC 1.0 $115.00 Paper: Off white Spine of Cover Completely Split and Cover Detached Label #1214366001

Cover by pencils Mike Sekowsky, inks by Murphy Anderson. 2nd appearance of the Justice League of America in "Challenge of the Weapons Master!" Script by Gardner Fox, pencils by Mike Sekowsky, inks by Bernard Sachs and Joe Giella; Having found an ancient book that appears to indicate that he once defeated the JLA, Xotar travels from 11,960 to the present to test four weapons against the Justice League, in order to determine which weapon will help him defeat the Intersolar Police of his own day; But the JLA counters each of Xotar's weapons and returns him to face justice in his own time. 36 Pages, Full Color. Cover price $0.10.

Add to cart PR 0.5 $139.95 or Best Offer Interior is complete. Full length spine split with missing back cover. Lateral spine tearing. This is a consignment item. A 3% buyer's premium ($4.20) will be charged at checkout. It has been graded by MyComicShop's experienced graders. Other items consigned by humble cow

Cover by pencils Mike Sekowsky, inks by Murphy Anderson. 2nd appearance of the Justice League of America in "Challenge of the Weapons Master!" Script by Gardner Fox, pencils by Mike Sekowsky, inks by Bernard Sachs and Joe Giella; Having found an ancient book that appears to indicate that he once defeated the JLA, Xotar travels from 11,960 to the present to test four weapons against the Justice League, in order to determine which weapon will help him defeat the Intersolar Police of his own day; But the JLA counters each of Xotar's weapons and returns him to face justice in his own time. 36 Pages, Full Color. Cover price $0.10.