I have a 83 Pogliaghi pista, no PSM. My take on my bike is Sante was in the shop and may
have looked at the frame, that's about it. I do know it was ordered from the Pogliaghi shop,
have no clue as to who built it.
That said there was some discussion of Pogliaghis marketed in Europe that didn't
have the PSM or serial numbers. I believe there is a thread here about one in Sweden.
There is one Pog tandem listed on the CR site serial number page that is also without any markings
and estimated to be a 74 or 75 build.
like any number of Italian builders serial numbers, personal markings etc. seem to be
widely variable.
cbresciani your Pog Pista is gorgeous.

marty