SEO's 11th turbine
post philately issued this stamp to mark the commissioning of an 11th turbine at the vianden facility. this important project is open to the public.
m11 is the 11th hydroelectric unit at the vianden plant which is operated by the societe electrique de l’our (seo). to mark the commissioning of the unit, post philately issued a commemorative stamp in september 2013.