Sounds like an Arabian to me. Arabians were exported to England and France a couple of hundred years ago to be crossbred with the larger European horses to create the Thoroughbred, the preferred modern race horse. Does anyone versed in horse lore know how they differ from the Caspian?
Not me. A horse is a horse, of course, of course...............
I was taught that the Arabian was the oldest horse breed and the Caspian looks simply like a smaller version of the same.