| Marvel Age Introductions by On-Sale Date |
| 1969 | JAN 9 | XMN054A | The X-Men | [XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Living Monolith] |
| 1969 | FEB 11 | XMN055A | The X-Men | [XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [Living Monolith] |
| 1969 | MAR 11 | XMN056A | The X-Men | [XMROS•Professor X • Angel • Beast • Cyclops • Iceman • Marvel Girl] [Living Monolith] |
| 1969 | APR 10 | XMN057A | The X-Men | [XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Polaris][Havok] [Larry Trask][Living Monolith] |
| 1969 | MAY 13 | XMN058 | The X-Men | [XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Polaris][Havok][Banshee][Living Monolith] |
| 1969 | JUN 17 | XMN059 | The X-Men | [XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl] [Polaris][Havok][Banshee][Quicksilver • Scarlet Witch ][Living Monolith] |
| 1969 | JUL 15 | XMN060 | The X-Men | [XMROS•Angel • Beast • Cyclops • Iceman • Marvel Girl • Polaris] [Havok][Banshee][Quicksilver • Scarlet Witch ][Sauron][Living Monolith] |