Henry doesn't need the PSA authentication to sell his stuff; however, since everyone knows he does the PSA authentication, it might make people wonder if there was no PSA Loa with his auctions. It is an odd situation to be in as a seller.
But the basic selling situation is no different than Rhys including his Loa with photos.
It is also relatively no different than me, Ben or David including our 'word' when we sell;e.g-if I bought a photo from David or Ben I would tell the next owner where it came from if they doubted my personal level of expertise (i am not all that famous).
As long as it is only authentication the buyer is concerned about, it all comes down to trust in the seller's skills as an authenticator.
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$co++ Forre$+
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