I think with all grading companies "authentic" means it's a real example of that sort of card that's been altered or has some other aspect that means they can't give it a number grade.
It's certainly a T206 Drum Cobb, and it's certainly been altered. SGC gave it an A for authentic when it was merely trimmed.
Personally I prefer the way stamp certificates word it. In this case it would be something like "It is genuine, trimmed, with partially redrawn back and fraudulently worn upper corners"
Much better than an A which could be altered, trimmed, recolored, rebacked, or simply a card that is original but undersize or one that has a cut that's too rough on one or more sides.
Steve B
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