Vintage German Water Razor Hone Stone similarly escher - eBay (item 280635063412 end time Mar-07-11 19:30:04 PST)

Someone is trying to pull a fast one here. For those who do not know German: it says on the label it is a "..kuenstlicher Abziehstein..." i.e. it is an artificial, man-made hone.

So if you want a barber hone: it may be something for you. If you want an Escher: look elsewhere.