What is it?

[cryptic]

Found this while digging bottles in a 1880-1930 spot. Not sure what it is. Knife sharpener maybe? I'm not even sure what it is made out of. Looks like Ceramic or stone.

 

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[Bigcypresshunter]

I think you are correct. I think its a sharpening stone from the fur trade era to sharpen scythes and sickles but some others think its a fossil. http://forum.treasurenet.com/index.php/topic,172150.0.html

I think you need to rub a little oil on it and see if it will sharpen a knife.

 

[cryptic]

That sure looks like the same item. I really do not think it is a fossil or a celt. Thanks!