I belong to a few Yahoo groups dedicated to Arabian Horse Breeding.
One group has a long-running game which is so difficult as to be almost impossible. Every month though, someone correctly guesses the answer. And every month my chin hits my chest when the horse is identified.
The moderator posts in the files a picture such as this:
It ususally has an almost helpful description, such as this one's, "Chestnut with socks."
Yeah, so we can rule out all the bays and blacks, and we know that the horse is a member of the subgroup of registered Arabians known as CMK Arabians, and lived after the invention of the camera. The style in which the picture is shot, with the head raised at that angle, the narrow width of the leather in the headstall, and the care taken to include the entire body and feet, posed on level ground, makes me believe that the picture was taken sometime between the late 1930s and mid-1970s. I can't tell from the picture, but I'm guessing it's a male horse, although the length of face and longer ears could make it a very athletic mare.
So that's as far as I ever get. Any Guesses?