100% Auth. You see this term used everywhere on eBay. What does it mean? Is it suppose to imply authentic? Probably. Even when sellers have plenty of characters left in the title, they use the abbreviation. If it's authentic, why not just say so? I've seen 100% auth in the description section as well - there's plenty of space there to say authentic. Do they think that if they say it's authentic (when it's not) then they are delibrately lying? But if they say it's auth...then they are not admitting either way and hope some poor fool will think it's authentic? I don't know about anyone else, but I stay well clear of "100% Auth" auctions.