I purchased this stone off eBay, it should arrive next week.
http://i6.ebayimg.com/03/i/000/93/9c/7489_1.JPG
(Sellers info: HERE IS A VINTAGE SHARPENING STONE IN A WOODEN CASE,,STONE IS 6 1/2" X 1 1/8".)
Does anyone have any ideas what it could be? I'm hoping an extremely Rare Black Escher...:w
