(pics) Bell with Nail inside it? Metal detected?

I found this in my back yard and I am not sure what it is. It looks like a bell with a nail in it. I think it is only bell shaped and not actually a bell.


http://i6.photobucket.com/albums/y243/az鈥?/a>


http://i6.photobucket.com/albums/y243/az鈥?/a>





From looking at these pictures can anyone guess what it is?(pics) Bell with Nail inside it? Metal detected?
it looks like the top of a light or lamp. welcome to the world of metal detecting. ha ha , I have found a few things also that I did not know what they were, but I have so much fun. in the 3 years that I started I have found over 2000 coins, most of it was modern, but the oldest was an 1887 nickle. I know I have not been much help but sometimes we dug up items of unknown origin. have fun