1960s custom chair and table set

Looking for any information on these unique chairs and tables. They were purchased in the 1960s or possibly very early 70s in Chicago and were said to have cost $15k in their day. The chairs are made of some sort of sculpted material and covered in an off white velour meterial.  The spike table legs are standard dining height and have a 1" thick round glass top of approximately 5' in diameter. The "Z" shaped coffee table has a rectangular 1" glass top.. Both table supports are made of welded steel and are painted very artistically. Any help in identification and value is appreciated!