From what I have found so far is that in 1983 for the 20th annv -- Buick used a real wire wheel The hollander # is a 1388 one year only that wheel used a trim ring and center cap. The wheel is a real wire type and uses real spokes. The 83 Riviera XX used a wire wheel just like this one but it had painted spokes. Also from what I understand that there was less than 500 cars that came with the wire wheel option, Thats probably why Im having such a tough time finding info on these wheels. This is the only info and pic I can find on the web of one of these wheels notice the trim ring and center cap.
Also here is a pic of the back of the wheel