Quote:
Originally Posted by drcy
And cards bought from PWCC have that provenance.
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That's a fair point, which makes provenance unfortunately less reliable unless purchased directly from the original owner and that person was known to you to be of such character as to not alter cards.
Where the provenance still would retain value to me as a 19th century collector pertains not so much as to the issue of alteration but to the issue of authenticity. If a rare card popped up out of nowhere and proof of its existence goes back only to a period when such a card already had a great value, I would be very nervous having confidence the card was real, at least not before undertaking some serious forensic analysis (that goes well beyond what any current TPG could provide).