While I was browzing other forum ( Slippertalk.com ), I noticed one of the venders ( Leo Schordje - Schordje.com ) was selling some of his collection. I saw it and grabbed it immediately. The tags says the original plant was from Dr. Martin Motes.
neb, I think Smiley's Orchids has one, too. When I was asking her about the fragrant Vandas, she included v. tessellata on the list. Here is the website.
http://www.smileyorchids.com/index.html You can email her and ask her what you are looking for. She will respond quickly. Her plants are so big and healthy.