Early Hand Forged Iron Hook Ring lantern hitching both?

Hello! I have to admit, this one has me stumped. It appears to be an old horse hitching post ring, but with an extra hook. Could this be for hanging a lantern? Maybe it's for another use altogether? It measures 5 5/8 inches long, and the ring is 2 3/8 inches in diameter. It is in good usable condition. I'm happy to combine shipping if you see anything else you like. Any questions please email me. Thanks for looking!