We offer for sale this very rare item. It's an envelope sent in 1942 from a Spanish concentration camp from Franco's regime, located in the city of Miranda de Ebro, in the region of Castilla. It was sent by a Polish prisoner to his family in Krakow. Spanish concentration camps existed in some places in Spain after the Spanish Civil war, to gather and concentrate the enemies of Franco: communists, republicans, anarchists and some other people like homosexuals or ex - soldiers from occupied European countries by totalitarian regimes like Nazi Germany .This kind of envelopes or letters with stamps and in this good condition are difficult to come across.