I have been working a string of houses that have been around for almost 100 years. Today I hit my first find. The old X-70 gave me a solid 40 and wouldn't budge. Dug down about 6"-7" and spotted the top of the shaker. My first thought was that I had found just the top. I went to pull on it and it wouldn't budge.It is about 4" tall. I tried to unscrew the top but no go. Anyway, I don't know what it is made of. It shows some bright silvery spots and is really heavy. I would guess it weighs around 8-10 ozs. Found it about 10' from the tree with the barrel underneath it.