If anyone could tell me how much it is worth, it would be good. Or even where I could find out would be helpfull to, because I think I might have it, it might not be and I need to check, but I am going to sell it some time
It'd be worth a lot, depending on the condition...and it'd be 60 or so years old :) I have a few Xmen first comics, for newer series, that are about 15 ish years old, those aren't worth much.
If you did have it, for something so rare, you'd want to hold a higher end auction through sotheby's or similar (not ebay). And they have professional staff that can help appraise the work.
If it's not already in a protective cover, put it in one.
If it the X-men #1 relaunch it's worth about $4 unless it's the holfoil cover than it's worth about $27. I have four of the regular variants and checked a while ago
How could it be 60 years old? The x-men were created in 1963. There is a price guide for comics in the back of every issue of Wizard magazine
Fifty years then :)