As has been noted in past features (see Market Watch | “stonark” / “*stoneark*” (Corner Collectibles)), eBay seller *stoneark* (recently changed from stonark) has paired Letters of Authenticity and Certificates of Authenticity from auction houses and a variety of other sources. I have been unable to verify the existence of most of these firms and individuals, which has raised a number of questions as to provenance. [Read more…]