Rare - Very hard to find!
Heavy Lion statue paperweight weighs 11.7 ounces! Feels very heavy in your hand, my guess is either brass or copper since it does not stick to a magnet at all.
The Huerfano Agency Co. was a coal sales company, they owned Castle Coal Company, and were dealers for Gordon Coal Company!
It is 4.3 inches long, 2 inches high, 1 inch wide.