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X-Men #49 Marvel 1968 (VG+) 1st Appearance of Polaris! Steranko Cover!
X-Men #5 CGC 2.0 3rd Magneto! 2nd app. of Scarlet & Quick Silver!
X-Men #50 CGC 7.0 (1968) 2nd Appearance of Polaris - Steranko Cover
X-Men #50 Marvel 1968 (VG-) 2nd App. of Polaris! Detached Top Staple
X-Men #51 Marvel 1968 (FN-) 1st App. of Erik the Red - Steranko Cover
X-Men #51 Marvel 1968 (VG+) 1st App. of Orik the Red! Steranko-C!
X-Men #52 Marvel 1969 (FN+) 1st Full App. of Erik the Red
X-Men #53 Marvel 1969 (VG+) 1st Barry Windsor-Smith Art
X-Men #54 FN+ 1st app. of Alex Summer (Havok)
X-Men #54 Marvel 1969 (VG) 1st App. of Alex Summers (Havok)
X-Men #55 Marvel 1969 (FN+) 2nd App. of Alex Summers (Havok)
X-Men #56 GD+/VG (1969) 1st appearance of the Living Monolith!
X-Men #56 Marvel 1969 (FN-) 1st App. of the Living Monolith - Neal Adams
X-Men #57 Marvel 1969 (FN-) 1st App. of Larry Trask! Neal Adams Cover!
X-Men #57 Marvel 1969 (VG/FN) Neal Adams Art
X-Men #58 CGC 8.5 (1969) 1st Appearance of Havok in Costume!
X-Men #58 Marvel 1969 (FN) 1st App. of Havok in Costume! Neal Adams!
X-Men #58 Marvel 1969 (VF-) 1st App. of Havok in Costume! Neal Adams!
X-Men #58 Marvel 1969 (VG-) 1st App. of Havok - Centerfold Detached
X-Men #6 Marvel 1964 (GD-) 3rd App. of Scarlet Witch
X-Men #60 GD+ (1969) 1st app. of Sauron! Water Damaged!
X-Men #60 GD/VG (1969) 1st app. of Sauron!
X-Men #60 Marvel 1969 (FN/VF) 1st Appearance of Sauron - Neal Adams
X-Men #60 VG- (1969) 1st app. of Sauron!
X-Men #61 Marvel 1969 (VG/FN) 2nd Appearance of Sauron - Neal Adams
X-Men #62 Marvel 1969 (FN-) 1st Savage Land - Bottom Centerfold Detached
X-Men #63 Marvel 1969 (VG/FN) 1st App. of Lorelei - Neal Adams
X-Men #7 CGC 9.2 (1964) 2nd Appearance of the Blob! HIGH GRADE
X-Men #7 GD/VG (1964) 1st app. of Cerebro! 2nd app. of Blob!