Here's a list of the P countries for my OFEC collection...
P'ing Chiang County Soviet
Pahang
Palau
Palo Seco
Papal City States
Papal States
Para
Patani
Patiala
Pattani
Pei Yang
Penang
Perak
Phenish Palatinate
Piratini
Pitcairn Islands
Pontianak
Posen
Provisional Gov't of China
Puebla
Puerto Rico
Thanks for looking,