I have one commemorative gutter top left of the ones I made for the 2011 NIA Show in San Jose, and I'm offering it for sale for $100, which includes shipping by Priority Mail. I made it using a potter's wheel for throwing and trimming the three parts, then I did some final hand trimming. Here are two views of the underside, showing how it was constructed and glaze-welded together. Note also that it's a "leaner", with the lowest part of the platter just past the "NIA" side of the marking. See [id=317267153] for pictures of the front.