Loose from the Fold?

There is no definite answer to this one!

Every collector has a different opinion about this. You get some who follow the Overstreet guide literally and say that folding a fold-in does degrade the quality. You get others who understand that it's hard to find a MAD that hasn't had the backcover folded and they're willing to overlook it. So it depends on the attitude of the buyer… I wonder what Al Jaffee would say?

For the record, The Overstreet Guide has the following quote: “#86—First Fold-In; commonly creased back covers makes this and later issues scarcer in Near Mint.” That implies to me that any MAD that has the fold-in folded is an automatic Very Fine grade.
Overstreet Guide Grading Definitions

With that said, I open up this page to all you serious collectors out there who care to share an opinion on this issue.