Help Identify Hone please

[krisbarger]

Picked this up for $8

It says on the little box it came in

Font of box: Rasiermesserstein Celtes
Kunststein-FabrikC. Pickel Marburg, Austria

inside of box stuff in english and german (i assume)

It is greenish gray a rectangle and 2" or so by 5" or so. Looks like it is in good shape.

Can anyone tell me anything about it? What is it worth? About what grit is it?

Thanks

Link to pictures.... http://gallery.me.com/krisandlynde#100042

 

[Chimensch]

I don't know its history but it's obviously a barbers hone similar to a Swaty and many others.

 

[SliceOfLife]

It's most likely aluminum oxide. Grit varies, but as it's a barber hone 6k-12k is the general range. Probably a normal distribution around 9k or so.
Value? With the box probably $30-50 on eBay.