The Uncanny X-Men - Facsimile Edition #101

Plot

Like a Phoenix, from the ashes! This momentous issue kicked off the most shocking X-Men epic of all: the Phoenix Saga!

As Jean Grey uses the full extent of her telekinetic powers in an attempt to safely guide a space shuttle containing her fellow X-Men back to Earth, the craft splashes down in Jamaica Bay. But when its passengers surface from the depths, where is Jean? As the anguished X-Men fear she may have perished in the crash, suddenly a dazzling redhead in a bold new costume rises out of the waves. She is fire and life incarnate - she is Phoenix! And nothing will ever be the same for the X-Men - or for Jean!

It's one of the all-time great Marvel comic books, boldly re-presented in its original form, ads and all!

Reprinting X-MEN (1963) #101.