The stainless 4566 PC 45 CQB was made in the smallest numbers.......91....?..examples?
My friend vigil617 did all the research and leg work on the CQBs. Hopefully he will be along and give you a difinitive number.
I was fortunate and found one several years ago. Mine was and is a shooter. Be prepared to pay quite a bit when you see one. Pre 2001 Performance Center guns are increasing in value - rapidly. And they are worth it too. IMO of course. Regards 18DAI