well it was about 4 or 5 foot long and had what looked like spikes underneath it. this thing is an older one from the 60's or 70's. i know what a tiller looks like and it doesnt look like this thing.
This may be Lely Roterra. My Dad had one for the farm. It has vertical spikes that are driven by a PTO so that the soil is mixed. You can see a photo of one on Ebay.