I ran across this in an antique shop for $10; never heard of it but it was in great shape and I liked the look of it. The finishing side seems close to a Swaty and the other side is just a bit coarser. I really like the feedback I get from both sides. I tried it with a Boker extra hollow that needed some attention, 10 laps on the coarse side and 10 on the fine, and it worked great. Definitely a keeper! :D