Hard to tell, looks like a front shoe, the O is probably the size, saddle horse shoes come in sizes, smallest is O and the largest I stocked when shoeing horses was a 3. To my eye
the logo doesn't look like a circle K, looks more like a horseshoe K. That said, I have no idea what company that is. I will say that the shoe doesn't look to me like it's been on a
horse, because those markings would have been worn off in a short period of time. It's hard to date a horse shoe, they have been around in the same configuration for a long long
time, but I would think this shoe is probably manufactured within the past 40 or 50 years, more likely not that far back. Your shoe looks like it's what's called a cold shoe, or a cowboy
shoe with the heels smoothed it's supposed to be ready to nail on by a cowboy with a minimum of shaping and fitting.
