Paulson Hat and canes , up until the mid / late 70's, as well as C & J before them, were all made by the Burt Co equipment and formula ( now CPC)..
As far as I'm aware, there's no way to tell a difference from when Paulson took over the C & J "CPC" shiny hat & cane chips, so all are generally referred to as ' C&J, and all are Burt (CPC) produced, even if some were actually made when Paulson took over C& J..