Is the bottom of the X-Men 3 shadow from your camera or a stain? I'd say they are both roughly a Very Good, which would be around 4.0 on CGC scale. Even if they are 3.0 still worth some good money.
The X-Men # 3 is probably worth $500-800 USD:
CGC Comic ID #17 is X-Men #3 from 1/64 published by Marvel Comics which has been certified by CGC Comics.
comicbookrealm.com
Iron Man #1 probably $500-700:
CGC Comic ID #197 is Iron Man #1 from 5/68 published by Marvel Comics which has been certified by CGC Comics.
comicbookrealm.com
Nice books, both would be considered key issues (Very early X-men/first appearance of The Blob, 1st issue of the ongoing Iron Man series).
They are worth getting professionally graded in my opinion, easier to sell (also to insure). Here is the CGC website:
Pop Culture Collectibles Grading | Certified Guaranty | CGC
Hope that helps a bit. This has made me miss comic book collecting lol