I remember those pipes from the 1950's, not Parkers that I could recognize specifically, but the leather wrapped were very popular, seen a lot on the commuter train platforms, very suave. For some reason, the twin bore has stuck around the English pipe community until even now. I have a Britannia that is twin bore, but it has served me well, and both airways accept a pipe cleaner to the bowl, so it's good. I bought it new about seven years ago, roughly ... a smooth quarter bent Dublin with an oval shank, no leather.