Thanks to you all for the input - very helpful! I was able to do some searching and find a couple of other supplements from the Index of Pittsburgh in some past auctions. They look pretty cool as well.
https://sports.ha.com/itm/baseball-c.../a/717-82106.s
https://bid.robertedwardauctions.com...e?itemid=40518
The second one sounds like it has some of the same types of edge tears that mine exhibits. I do think if it was professionally mounted and framed it would "ameliorate" (learned a new word!) their effects. My concern would be that the matting at the very edges of the supplement might over time impact the edges if it were ever removed from the matting, but I am guessing that wouldn't really be my concern. If I go that route, does anyone have any suggestions or recommendations on how I should request this be matted and framed?