Hi PMRet,
Yes they are scarce. The Performance Center 4 inch full lug is not marked "performance center", nor does it have the performance center seal. It has a standard S&W logo.
I spoke with a Mr Rae at S&W. He made these 4 inch full lug 14's for PPC. He told me "around 131 made.." Member CALREB kindly filled me in on details about these revolvers. Hopefully he will see this thread.
They have a "duty action job.." as it was described to me. Very slightly heavy DA pull - BUT - SMOOOTH, with a crisp break! Contributes to the outstanding accuracy of these revolvers. Regards 18DAI