Quote from Ron K's book:
"Many well executed forgeries exist in the market. Just about 100 percent of Brouthers signatures in the market are forgeries."
I know nothing about Brouthers autographs and I certainly do not have the experience to give an opinion, but I will add that the signature itself looks nothing like the two exemplars in Ron's book. Heck, the two exemplars don't even look like the same person.
27 year difference between the two...