Carl Barks is usually called "The Duck Artist" for good reason. Besides the artwork, Barks' produced adventurous tales than spanned continents and involved a sense of drama unusually well-articulated for a children's comic book.
The printing here is especially atrocious. This is from the 1976 reprint of what was originally produced in 1966. I suspect the 1966 print job was better. Colors are mostly in register (but take a look at the sloppy cutting job around the ladder in the first panel. Someone just didn't care or was given no time to do a proper job). The horrendous bleed through from the opposite side of the sheet, plus the dirty ink spotting all over the front of the sheet leads me to believe the paper is the main problem.
Huey, Duey or Louie: "Seems to us a new pane of glass would cost about a dollar, and would seal the hole more sensibly!
Scrooge: "It'd seal the hole all right, lads, but then I'd be a dollar poorer!"
A busted window is letting in moths who threaten to consume Uncle Scrooge's mound of paper money.
See another page from Carl Barks "Micro-Ducks from Outer Space" here.

Uncle Scrooge #334 by Don Rosa: The Quest for Kalevala
Uncle Scrooge page from "Klassika" collection of Greek Disney Comics
Oversize Marco Rota page from Uncle Scrooge #326