little help guys? Williams Mantle + story
 

My friends brother-in-law recently passed away and left THOUSANDS of cards and even more memorabilia items. MANY of them are signed by Billy. Friends apparently with Billy Martin and obviously a fan - he left behind 4000/5000 Billy Martin cards and signed items. MAYBE 200+ Dodgers and Mets and assorted signed baseballs. Also a signed Mantle jersey and a signed Martin jersey as well as numerous signed auto racing jackets.
I'm NOT looking for a lot of free advice. I have been selling on eBay over 20 (!) years and my word is my bond. I'm not an autograph guy. I have helped quite a few people here on net54 and just looking for a couple of educated opinions about the following three pieces. I'm trying to determine if these few things are "right" before I even address the collection. I am always impressed by the threads I follow here and hope a couple of you will suggest - probably/likely real (without it in hand) or boy that's so not real. TY in advance.
friendly,
henry moses

All good
 

These three look good to me

They all look good to me as well

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All of those autographs are authentic.

I LOVE the Green dual signed Mantle ticket. The back side is a smokin hot blazing pen signature. Great authentic items.

+1

thanks for taking the time
 

to respond. I listed everything and will be listing some more this week/next week.