One of my favourite E-bay sellers is Bonds of Oxford Street.They manage to find some rarer interesting, unsmoked, older Petes from old shop stock.
I was surfing their site recently and spotted an unusual System from the 1970's.It was an unsmoked 312 Smooth Standard which had a bowl with carved facets and rustication combined.
As usual the quality of briar used during this period is outstanding.I would have assumed that when a pipe is done in this style that there are probably faults or fills in evidence,however having been over it pretty thoroughly I can find none.
From a tactile point of view,it is brilliant in the hand,very comfortable to hold.
Like a few things from Petersons past,I would hope that one day,they may reconsider resurrecting this style.