Does not look like lead. I am going to go with the OP's assessment of iron. It should stick to a magnet if it is. I have a very old iron trolley and a figurine also. No idea when they made them out of iron although I was told it was before they were made out of lead.
I'm going to take a stab in the dark at this.
It reminds me of part of a cast iron doorstop that were used to keep doors open to allow for a breeze to pass through your home. They were very popular in the 1930's & 40's and earlier.