Has anyone ever heard of these? I was at a thrift store today and I saw one and tried it out. It looked very old but was very nice. I don't think it's mechanical, but it was very smooth and tactile and I think there was even a kind-of-sort-of click when bottoming out. I liked it better than the Key Tronics they had there (KB101, and some other old one). It had a big [S|A|G] logo on the top left (I think, might have been the right). Anyone have some more info on these? If it's a membrane I think I'll buy it and saw off the number pad because this BlackWidow I'm using is just too big.