A double shot of classic covers while I got Marvel's Merry Mutants on my mind.*
Issue forty-four, the first X-men comic I ever read.
And issue one seventy-five, the first issue I bought for myself using my allowance.
#44 is no longer in continuity as I barely remember Roy Thomas' story from this one. However, the sheer awesome beauty that is Claremont and Smith's work on #175 is firmly in continuity.
*Alliteration, I know. Sorry.