Antique Cast Iron Bust

I found this bust in the window of our local antique store where I watched and dreamed about it for months!  My aunt liked it too and after about six months of asking each other if "it" was still there, she called and told me the price had dropped and she saw some other women pointing at it. I had enough at that point! I scraped up the money within a couple of days and as luck would have it, she came home with me.  She is almost 3 ft tall and 200+ lbs of pure rusty iron. The pear in the photos is for size reference. She is old, real old,  I just don't know how old that is. Any information about her will be appreciated such as period, style, approximate age, value?  

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