It's funny if thing goes this way: I for example bought an authentic bag on eBay with very poor pictures, no datecode or stamped pictures listed , just bag. I'm lucky to buy it for real. But once I got the bag I turn it's fake while I have a sane fake one with me. I claim money on paypal. Paypal asks for a letter of authenticity of the bag. I will do as usual but using the fake one. And I get a formal letter. Will paypal trust this?
This an example about silly letter they ask for. But anyway .... Hard to believe in everything.