Amazing Spider-man #120 First Print (1973) CGC 7.0 graded comic book from Marvel Comics, which is written by Gerry Conway with cover artwork by John Romita Sr.
This key issue features the Incredible Hulk!
It has been professionally graded by CGC, the largest independent comic grading company in the world, as mid to high grade 7.0 (FINE/VERY FINE) and slabbed in a sealed protective case. The CGC grading process also assesses the comic for numerous types of restoration and found none.
You can check the validity of this item by entering the 10 digit number on the label at the CGC comics web-site.
There are no cracks on the case. Any glare is just the scanner on the CGC case, which can cause reflection.