Mike,
This will be a Protocraft "style" coupler,even using the Protocraft draft box,but Norm has nothing in it. Norm said making such couplers he would never be able to get his initial investment back even. I thought without official conformation,this manufacturer made the 1st Protocraft style coupler. Bill Glouser? Not sure at all. These are supposed to have the shelfs added to the Protocraft body.
Al Hummel