Barcelona Table  

I just picked up one of these at a thrift store for $150. It appears to be polished stainless steel (came with no floor glides, and where metal touches floor it appears to be solid steel). Glass has numerous scratches and table appears to be an older model, but a gorgeous piece. Not marked, save for an unintelligible , off-centered and very small stamp or pitting of the steel on the underside of the X. The top has four holes, not five, for the rubber mounts. Could it be an old Knoll, or made in Italy?