NORTH KOREA (1999) Rimyongsu power station*. Specimen pair. KSC No 3974, Michel No 4173.
AVAILABLE AT $15
NORTH KOREA (1999) Jangjasan power station*. Specimen pair. KSC No 3975, Michel No 4174.
AVAILABLE AT $15
NORTH KOREA (1994) Hydroelectric Dam*. Water pollution - World Environment Day*. Deluxe proof. KSC No 3502, Michel No 3632.
AVAILABLE AT $50