Last weekend I was at an antique store and laying on the bottom shelf of the "shaving case" was this little hone. It is marked on one side A.M. Hone Co. And on the other side Little Devil. It measures 2 3/4"x1 3/4" x3/8"The only info that I could find on this stone was a eBay auction that ended earlier this year at $102, but this stone was 1" longer than mi e. I assumed when I bought it that it was a barbers hone for touch ups because it feels like it is a very high grit stone. Does anyone have any knowledge of his stone or why one would sell for so much on eBay?