I have decided that I like the clean look of the hubcaps, with the color matching centers, instead of the brake-dust encrusted "Bundt Cake" wheels, so I went to the local Euro Car boneyard & picked up 4 rims & hubcaps, got the color match paint from MBz (why so expensive the paint, Mercedes?) and painted the hubcap centers.

Everything turned out nice, and when I went to put the hubcaps onto the old 123, I found out what I had stupidly failed to observe - one of the 4 hubcaps that I had spent such care on to paint perfectly was missing the little "tangs" around the inside that clasp into the inside of the rim to hold the hubcap on.
Damn!
What are those things called, anyway? Can they be purchased and somehow attached to the hubcap? Or do I have to go back to the wrecker for another hubcap, and redo it all over again?
Double Damn! I am out of that expensive MBz paint, too.

Arrgh!