These stamps were intended for use in liberated area by Pathet Lao insurgent. ›› example

The postal administration in Vientiane never recognized them valid as postage although mail from the Pathet Lao area of control seems to exist addressed abroad through P. R. of China postal service's.

At least during armistices, mail between insurgent and government areas was allowed although those bearing with Pathet Lao stamps were re-affixed with Kingdom of Laos postage stamps at government expenses. ›› example

Xieng Khouang Issues			Viengsay Issues
Click on pictures to see details of the related issue  Pathet Lao - Mi # 1 / 8 20.00 US$	FDC Pathet Lao - Mi # 1 / 8 90.00 US$		Pathet Lao - Mi # 9 / 17 40.00 US$	FDC Pathet Lao - Mi # 9 / 15 150.00 US$