1942 Formula Letter From Sachsenhausen Concentration Camp to Poland

1942 formula letter from Sachsenhausen Concentration Camp. The letter is a folding card with instructions to the sender and a space for a message. Instructions to the reciepient is attached via a pasted strip. Sachsenhausen, in Oranienburg Germany, near Berlin, was a brutal camp, noted for extermination of Russian POW's as well as political and religious prisoners. Small tear in right margin. Overall great shape considering conditions this survived.