Very rare and scarce researched ID number patch that belonged to a Czech female prisoner who was in 3 concentration camps and survived! KL Auschwitz, KL Lublin and finally KL Ravensbrück where she was liberated in 1944. Cloth patch is made from linen and it is unstitched from uniform. The number is printed with black ink. Set comes with a printed postcard with all his information. She was given number 70405 when she left KL Ravensbrück.