Name this ceiling fan?

I bought a ceiling fan from a yard sale. I installed it and it works fine. What makes it unique is the fact that it has two blades on top which spin in one direction and directly below is two more blades that spin in the other direction....it also has a light on the bottom and is all wood. I can't find a brand name anywhere on it and the yard sale lady didn't know the brand either. It has no chains or switches on the fan itself, at all. It turns on and off at the wall switch and apparently has only one speed which is "on" or "off" (including the light). Anyone ever seen a ceiling fan like this or know of a brand name for it???