Anybody recognize this tiller?

All I have is this single picture to go on. I ask the owner if he could find anything, anywhere, on the tiller(what's left of it) to help identify it. He said all he found was DRT somewhere on the tiller, which all it probably means is dual rotating tines. It has has a 8 HP Briggs but he has no idea if that is the original motor. I though it may be worth parting out if it's worth the drive to pick it up. Anybody have an idea of the make and/or model?