I am assuming it's sitting on a standard paper towel? If so, it's unusually large so maybe from a Clydesdale or Morgan, which are typical heavy haulers among horses. So as to age, there are many clues.
First would be the big cleats, which show it for traction in dirt and mud while pulling. Modern shoes are flat to deal with paved roads
Second clue would be the thinness of the material, so I would assume steel instead of iron, An iron shoe would be too weak and break easily under load while steel would not.
Third clue is how narrow it is as well. This is to make it lighter for the horse, so indicates road use over heavy farm work. So probably a carriage or lighter delivery wagon on dirt roads. These clues indicate that it is most likely from about 1900 to 1930 era.
Hope this helps!