No idea about authenticity, but I found this hilarious:
"I not saying that this is Ruth's equipment bag... This could only be his"
Personally, I feel that anyone who goes out of their way to tie an item to Ruth or any other player, but then leaves themselves a loophole with a "it might not be" statement, is raising a huge red flag.
I also wish that more of these "amazing finds" were presented by people who had a better grasp on grammar and punctuation. Deciphering some of these ramblings makes my head hurt...