Replacement pickup coil question

Not all were riveted. I have one that installs just like a set of points. It's now in my distributor machine. That clip sounds like the little clip which retains the advance plate pivot:

Check this out:

In the photo, working your way counterclockwise from the thumb, you have the screw which tightens the adjustment, and near the bottom, a little stud head riveted into the advance plate. This protrudes down through the bottom plate, and has that little triangular clip on the bottom

http://www.moparmusclemagazine.com/...opar_electronic_ignition_system/photo_03.html



Bottom photo is my distributor machine conversion, and this distributor was originally not riveted.