Very curious butterfly knife!  Knife is hand crafted, very small and easy to hide. It was a family heirloom! The person who sold it to me claimed that his father took it Kapo during the liberation of the camp in Buchenwald. He swore by all holiness its true . Apparently this was a very brutal Kapo German prisoner criminals and was in several KZ camps. He was killed by inmates. I tried to check on these numbers prisoner number, but for all of these numbers is the few prisoners and also story about killed him in camp but i dont find any info. On both sides there are marks and numbers. If we followed this trail could prove that: KL - GR - N / A 34,870 (Konzentrationslager Gross - Rosen and number 34870) KL - RB - N / O 13390 (Konzentrationslager Ravensbrück and number 13390) KL - SH - BJ - WJ - N / A 82,603 (This could mean Konzentrationslager Sachsenhausen, Buchenwald?, Waimar? And number 82603) I know that there are different stories from sellers and I do not know what to think about it but the subject is very , very interesting !