Hello,
I am a lifelong fan of Harrison Ford and I am looking at a couple of signed items from two separate sellers on eBay (IPGraphCo, and K9Graphs). My concern is, of course, authenticity and I have no idea how to tell. Could someone please share their opinion on these two items and whether these sellers are legitimate? Links are here:

https://www.ebay.com/itm/313800855105

https://www.ebay.com/itm/164401246354

I greatly appreciate all the help I can get!