MCsub

Hey Joey... any chance this makes the .1% you speak of? This is my 4 iron and it sure looks like copper to me.

Let me put this one to rest guys. The Z101s (or at least the brushed ones I have) absolutely have the copper underlay, because I can see it in various spots around the hosel and one other spot on the toe of one of the irons. I am not an authority on the Tourstage line, but my brushed Zs definitely have the copper underlay.

Here is what I have learned so far: 1. Satin finish instead of polished chrome. 2. Copper layer under chrome to greatly enhance feel. This is supposed to be the best feeling iron head of all. 3. Slightly smaller clubhead, which I personally prefer. 4. Better quality control in manufacturing process. 5. Will hold their value much better because there were only 1500 sets made. No more will ever be made. drgam - the Zs also have the copper underlay. Mine are satin finished (no performance difference here). Club head size is preference. Quality control... if the 23s are noticeable better than my Zs they must be made by God. 1500 sets... if you buy for resale, then I agree w/ you on this one.