I Don't Know But I Couldn't Resist

When a card appears for sale and it is your favorite player from your childhood does it matter if it is valuable, useful or legit?  What if it is all of that plus something from Kellogg's?

I couldn't resist since it was affordable and a nice display item if nothing else.

Sure, its from a screwed up printing, but that makes it interesting.  

I couldn't resist the one with Seaver because Billy Williams can also be seen on this sheet.  He is printed along with Seaver on the left panel.   

Williams only managed one HR in 95 plate appearances against Seaver.  He did worse against Carlton hitting only one in 101 PA.  He did much better against Gibson and G. Perry.