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E, Danielraises his hand. Ah, sir, I actually REALLY like these pieces of memorabilia cards.
I won't pretend to have an argument to convince anyone else. I just enjoy the format, the concept, and the execution. I think the cut auto's look much more interesting in a created card format than letter form, and as long as no 'seriously' important doc. gets destroyed for it - don't mind in the slightest to have the hancock redeployed to new environs.
I also really enjoy the game used memorabilia, especially patch items, though I don't collect them all too much.
Visiting Chris's "Zup's Sportscards" site (http://www.freewebs.com/cezupsic/), I was completely blown away by his Gehrig numbers patch card, and a truly astounding Dimaggio Green Patch that defies recognition and description.
I actually don't believe that most game-used come from 'one off' type items, and that indeed much surviving memorabilia exists in sufficient numbers to donate an example or so to the card world. Whether they are worth anything in the future doesn't worry me in the slightest, I actually just enjoy being able to look at and have contact with items used by actual players of the game. And looking at them on-line in museums doesn't give me the same kind of feeling.
David, I disagree completely and think EVERY cent of this card's auction price has to do with the sigs and the fact they have authentication/provenance beyond what most people will be able to establish.
I fully expect nearly no one else will agree, but that's ok - I don't go to Church on Sunday either 
Daniel