| Issue |
Cover Date |
Cover Price |
Comments |
| 1 | Sep 1963 | $0.00 | O:1:X-Men; 1:Magneto; 1:Professor X |
| 2 | Nov 1963 | $0.12 | 1:Vanisher |
| 3 | Jan 1964 | $0.12 | 1:Blob |
| 4 | Mar 1964 | $0.12 | 1:Quicksilver, Scarlet Wi tch, Toad |
| 5 | May 1964 | $0.12 | A:Brotherhood of Evil Mut ants |
| 6 | Jul 1964 | $0.12 | A:Sub-Mariner |
| 7 | Sep 1964 | $0.12 | A:Brotherhood of Evil Mut ants |
| 8 | Nov 1964 | $0.12 | 1:Unus The Untouchable |
| 9 | Jan 1965 | $0.12 | A:Early Avengers; 1:Lucifer |
| 10 | Mar 1965 | $0.12 | 1:S.A. Ka-Zar |
| 11 | May 1965 | $0.12 | 1:The Stranger |
| 12 | Jul 1965 | $0.12 | O:Professor X 1:Juggernaut |
| 13 | Sep 1965 | $0.12 | A:Juggernaut |
| 14 | Nov 1965 | $0.12 | 1:Sentinels |
| 15 | Dec 1965 | $0.12 | O:Beast |
| 16 | Jan 1966 | $0.12 | 1:Mastermold |
| 17 | Feb 1966 | $0.12 | A:Magneto |
| 18 | Mar 1966 | $0.12 | A:Magneto |
| 19 | Apr 1966 | $0.12 | 1:Mimic |
| 20 | May 1966 | $0.12 | A:Lucifer |
| 21 | Jun 1966 | $0.12 | A:Lucifer |
| 22 | Jul 1966 | $0.12 | |
| 23 | Aug 1966 | $0.12 | |
| 24 | Sep 1966 | $0.12 | 1:Locust |
| 25 | Oct 1966 | $0.12 | 1:El Tigre |
| 26 | Nov 1966 | $0.12 | A:El Tigre |
| 27 | Dec 1966 | $0.12 | Re-enter The Mimic |
| 28 | Jan 1967 | $0.12 | 1:Banshee |
| 29 | Feb 1967 | $0.12 | |
| 30 | Mar 1967 | $0.12 | 1:Warlock |
| 31 | Apr 1967 | $0.12 | 1:Cobalt Man |
| 32 | May 1967 | $0.12 | A:Juggernaut |
| 33 | Jun 1967 | $0.12 | A:Dr. Strange; A:Juggernaut |
| 34 | Jul 1967 | $0.12 | A:Tyrannus |
| 35 | Aug 1967 | $0.00 | A:Spider-Man; 1:Changeling |
| 36 | Sep 1967 | $0.12 | A:Mekano |
| 37 | Oct 1967 | $0.00 | |
| 38 | Nov 1967 | $0.12 | B:Origins of the X-Men |
| 39 | Dec 1967 | $0.12 | N:X-Men |
| 40 | Jan 1968 | $0.12 | A:Frankenstein |
| 41 | Feb 1968 | $0.12 | 1:Grotesk |
| 42 | Mar 1968 | $0.12 | D:Professor X (Changeling disguised as) |
| 43 | Apr 1968 | $0.00 | A:Magneto; C:Avengers |
| 44 | May 1968 | $0.00 | 1:G.A. Raven in S.A. |
| 45 | Jun 1968 | $0.12 | A:Magneto |
| 46 | Jul 1968 | $0.12 | A:Juggernaut |
| 47 | Aug 1968 | $0.12 | 1:Maha Yogi |
| 48 | Sep 1968 | $0.12 | |
| 49 | Oct 1968 | $0.00 | 1:Polaris |
| 50 | Nov 1968 | $0.12 | Steranko-c |
| 51 | Dec 1968 | $0.12 | A:Erik The Red Steranko-c |
| 52 | Jan 1969 | $0.12 | (1969) A: Eric the Red |
| 53 | Feb 1969 | $0.12 | 1:Barry Smith-a in comic book |
| 54 | Mar 1969 | $0.12 | 1:Alex Summers who later becomes Havok |
| 55 | Apr 1969 | $0.12 | Alex summer discovers his mutant powers |
| 56 | May 1969 | $0.12 | 1:Havok w/out costume; A:Living Monolith |
| 57 | Jun 1969 | $0.12 | A:Sentinels; E:Origins of The X-Men |
| 58 | Jul 1969 | $0.15 | 1:Havok in costume |
| 59 | Aug 1969 | $0.15 | A:Sentinels |
| 60 | Sep 1969 | $0.15 | 1:Sauron |
| 61 | Oct 1969 | $0.15 | A:Sauron |
| 62 | Nov 1969 | $0.15 | A:Magneto, Ka-Zar, Sauron |
| 63 | Dec 1969 | $0.15 | A:Magneto, Ka-Zar |
| 64 | Jan 1970 | $0.00 | 1:Sunfire |
| 65 | Feb 1970 | $0.15 | R:Professor X |
| 66 | Mar 1970 | $0.15 | Last Story with Orginal X-Men; battle Hulk |
| 67 | Dec 1970 | $0.00 | (52 pages) reprint #12,13 |
| 68 | Feb 1971 | $0.00 | (52 pages) reprint #14,15 |
| 69 | Apr 1971 | $0.00 | (52 pages) reprint #16,19 |
| 70 | Jun 1971 | $0.00 | (52 pages) reprint #17,18 |
| 71 | Aug 1971 | $0.00 | reprint of #20 |
| 72 | Oct 1971 | $0.00 | (52 pages) reprint #21,24 |
| 73 | Dec 1971 | $0.00 | reprint #25 |
| 74 | Feb 1972 | $0.00 | reprint #26 |
| 75 | Apr 1972 | $0.00 | reprint #27 |
| 76 | Jun 1972 | $0.00 | reprint #28 |
| 77 | Aug 1972 | $0.00 | reprint #29 |
| 78 | Oct 1972 | $0.20 | reprint #29 |
| 79 | Dec 1972 | $0.00 | reprint #31 |
| 80 | Feb 1973 | $0.00 | reprint #32 |
| 81 | Apr 1973 | $0.00 | reprint #33 |
| 82 | Jun 1973 | $0.00 | reprint #34 |
| 83 | Aug 1973 | $0.00 | reprint #35 |
| 84 | Oct 1973 | $0.00 | reprint #36 |
| 85 | Dec 1973 | $0.00 | reprint #37 |
| 86 | Feb 1974 | $0.00 | reprint #38 |
| 87 | Apr 1974 | $0.00 | reprint #39 |
| 88 | Jun 1974 | $0.00 | reprint #40 |
| 89 | Aug 1974 | $0.00 | reprint #41 |
| 90 | Oct 1974 | $0.25 | reprint #42 |
| 91 | Dec 1974 | $0.00 | reprint #43 |
| 92 | Feb 1975 | $0.00 | reprint #44 |
| 93 | Jun 1975 | $0.00 | reprint #45 |
| 94 | Aug 1975 | $0.25 | B:New X-Men (See Giant Size for 1st appearance) |
| 95 | Oct 1975 | $0.25 | D:Thunderbird |
| 96 | Dec 1975 | $0.25 | 1:Moira MacTaggert |
| 97 | Feb 1976 | $0.25 | A:Eric The Red |
| 98 | Apr 1976 | $0.25 | A:Sentinels |
| 99 | Jun 1976 | $0.25 | A:Sentinels |
| 100 | Aug 1976 | $0.25 | Old vs New X-Men; O:Phoenix (part) |
| 101 | Oct 1976 | $0.30 | O:Phoenix concludes |
| 102 | Dec 1976 | $0.30 | O:Storm |
| 103 | Feb 1977 | $0.30 | |
| 104 | Apr 1977 | $0.30 | C:Starjammers |
| 105 | Jun 1977 | $0.30 | A:Firelord |
| 106 | Aug 1977 | $0.30 | Old vs New X-Men; $.30 & $.35 issue exist |
| 107 | Oct 1977 | $0.30 | 1:Star Jammers last $.30 issue |
| 108 | Dec 1977 | $0.35 | B:John Byrne-a X-Men (see Marvel Team-Up #53) |
| 109 | Feb 1978 | $0.35 | 1:Vindicator |
| 110 | Apr 1978 | $0.35 | Phoenix joins; A:Warhawk |
| 111 | Jun 1978 | $0.35 | A:Mesmero C:Magneto |
| 112 | Aug 1978 | $0.35 | A:Magneto |
| 113 | Sep 1978 | $0.35 | A:Magneto |
| 114 | Oct 1978 | $0.35 | A:Sauron |
| 115 | Nov 1978 | $0.35 | A:Sauron |
| 116 | Dec 1978 | $0.35 | A:Ka-Zar; A:Sauron |
| 117 | Jan 1979 | $0.35 | O:Professor X |
| 118 | Feb 1979 | $0.35 | 1:Moses Magnum |
| 119 | Mar 1979 | $0.35 | A:Moses Magnum |
| 120 | Apr 1979 | $0.35 | C:Alpha Flight; E:$.35-c |
| 121 | May 1979 | $0.35 | 1:Alpha Flight |
| 122 | Jun 1979 | $0.40 | |
| 123 | Jul 1979 | $0.40 | X:Spider-Man |
| 124 | Aug 1979 | $0.40 | Colossus becomes Proletar ian |
| 125 | Sep 1979 | $0.35 | |
| 126 | Oct 1979 | $0.40 | A:Proteus |
| 127 | Nov 1979 | $0.40 | A:Proteus |
| 128 | Dec 1979 | $0.40 | A:Proteus |
| 129 | Jan 1980 | $0.40 | 1:Kitty Pryde 1:White Queen |
| 130 | Feb 1980 | $0.40 | 1:Dazzler |
| 131 | Mar 1980 | $0.40 | A:Dazzler |
| 132 | Apr 1980 | $0.40 | |
| 133 | May 1980 | $0.40 | A:Wolverine |
| 134 | Jun 1980 | $0.40 | 1:Dark Phoenix |
| 135 | Jul 1980 | $0.40 | A:Dark Phoenix |
| 136 | Aug 1980 | $0.40 | A:Dark Phoenix |
| 137 | Sep 1980 | $0.75 | D:Phoenix; (double size) |
| 138 | Oct 1980 | $0.50 | A:Dazzler; Q:Cyclops |
| 139 | Nov 1980 | $0.50 | A:Alpha Flight; Kitty Pryde Joins; N:Wolverine |
| 140 | Dec 1980 | $0.50 | A:Alpha Flight A:Wendigo |
| 141 | Jan 1981 | $0.50 | 1:Rachel;D:Frank Richards 1:Future X-Men; B.E.M. |