What to do with 109 autographed baseballs

[piner]

My brother in law collected autographed baseballs. He got them all in person over many years. He’s kept them in individual cubes for display purposes. They moved houses and he’s decided to part with the collection and asked my advice. I have no clue. I’ve only dealt with sports cards and not autographed memorabilia.

The signers range from Mantle, Banks, Berra, Mays all the ways to Denny Neagle and Rob Dibble.

Do you think he should get them all authenticated and then try to move them?

Open to any advice.

Thanks!