From the seller, which pretty much supports what Gene, et al, has said!

"They were between the Osheas and the Imperial palace. About 20 years ago. In the cement.There are no more. Some of them look like that some one tried to make their own fake ones to fool the machines,as you can see they are made of lead. Some times they put the in cement on the corners of building for good luck."

But that doesn't explain this in the same concrete burial spot EXECEPT that it too is MADE of LEAD! Why go to this much trouble? SHEESH!

I made that gouge with a regular little pen knife, it's all LEAD!