Don't know whether IH built it inhouse or had somebody build it with their name on it. Either way, you are asking about the International 110 Disk Harrow.
JIm and Outdoors4evr,
Thank you. I figured there was a disk, but I haven't been able to find one. I have the tiller, but I'd have to remove the mower pulley every time I want to use the tiller, so I thought a disk might be easier.