Unfortunately, that other item must be sold. I clicked on See Seller's other items but came up blank. You may still be able to see that auction because of having viewed it while it was still active and it is residing in your computer's history. If you can still view that item, then bring it back up, take note of the either the listing number or the entire URL and post it here in this thread.
Neither Colt nor Case nor Ingersoll ever offered any sort of mule drive to work with their 3 point hitch nor were there any attachments made by these companies that were driven mechanically. All attachments that required a rotary force utilized a hydraulic motor and simply plugged into the rear PTO valve to obtain hydraulic power.
I have seen a couple of hydraulic 540 PTO's that were designed to mount on the rear of the actual tractor but not on a hitch. Those were homemade. Case and Ingersoll also offered mechanical 540 RPM PTO drives that were belt driven off the mechanical PTO clutch on the front of the engine. These were designed to run a bale elevator, grain auger or other such farm machinery that required relatively low HP input. The first design mounted on the left side of the early 100 Series tractors built in the late 60's. The later design was from the early to mid 80's and mounted as a Snap Fast attachment.
There was no pressing need for this item to be introduced but the government initiated a program that removed the sales tax from garden tractors providing they could be used as a legitimate piece of farming equipment.