You show #1X to be an error copy of #1 5th print.
Do you know what the error is? I wish there was a place to mention the error.
I have seen where some say it is because of the reversed page numbers 4 & 5 in the second short story in the back of the comic. If this is it, then there should not be a 1F and 1X because I have never found one that was not this way. My copy is this way and all others I have ask to say the same. Also, the date may not be correct for 1X.
Some more info on CGC:
