X-Men #9 Poor (1) 1st Appearance Lucifer Meets Avengers Marvel 1965 Marvel Comics
You can see it has a subscription crease and some general wear.
The page sequence goes from 1, 2, 3, 4, ad, ad, 5, 6, 7, 8, Ad page, 9, [Unknown detached pages sequence], Ad, Ad, 17, 18, 19, The End, Hypno coin ad page, 4 masterpieces, Lets visit the X-Men 2pgs, detached trimmed marvel girl PinUp taped in place in rear (see photos)
I can't tell which pages are supposed to be where in the ads due to some being taped at the end and whether or not a half page might be missing or just trimmed. Maybe from the description and a comparison of a whole sequenced one you can figure that out.