anyone ever seen these rotors?

So I picked up this car less than a year ago and have found a lot of extra mods this car has that want mentioned by the previous owner. The latest is realizing the front end has the Kelsey Hayes 4 piston calipers. The problem is as I've been researching the set up I haven't seen a rotor like these yet. Has anyone ever seen these and know where I can pick up a set? Thanks!