I think Hague's signature adds authenticity. You're going to have to count on Froch turning into Ali though, to make mega bucks out of it in the immediate term, imo.
Carl insists on dedicating each signature now to prevent his stuff flooding the market. So, if your glove just has his name it is worth more. Damon does secret contract work in the Middle East and is still very happy with God. It's worth more than 80 quid - I reckon at the right dinner that would go for 250 or even more. Adios.