Looks like brass.

[Garabaldi]

Any ideas what this is?

 

[traderoftreasures]

looks to maybe be the water spout end of a hog waterer

 

[trikikiwi]

Could it be the cap off a (wooden?) rod which has been ground down?
Are the inner edges of the curve flat, as on the same plane?
From memory, there was a similar looking item on TNet some time ago, but I think it was bigger and I think it was identified as the cap for a horse buggy arm. Worn away where it rested and dragged on the ground - when the horse wasn't attached
Otherwise, first thought was pencil sharpener
Mike

 

[Garabaldi]

I am leaning toward a flag pole holder. Your onto it Triki.

 

[DirtyMike]

I am leaning toward a flag pole holder. Your onto it Triki.

I am thinking its a little small for that.

 

[traderoftreasures]

or it could be a broken tip off of a syrup tap

 

[Jeff H]

I think the link below will help.

http://forum.treasurenet.com/index.php/topic,271939.msg1937497.html#msg1937497

 

[bradyboy]

looks like one of my ex wife fingernails
Brady

 

[Tuberale]

Maybe a finger guard? Like a thimble, but for a different finger.