If I list a card that qualifies for eBay's free authenticity guarantee processing, is there a requirement by the grading company or else a policy rule for how it must be shipped? Do they require a top loader? And how (with what protection and marking) will the authenticator then send it on to the buyer?

Authenticity guarantee for a Pokemon card or other trading card | Ask a Mentor

Authenticity guarantee for a Pokemon card or other trading card | Ask a Mentor | eBay Community