The only original holocost items I have seen are the Lodz Ghetto coins. Even these have many reproductions. There are other legitimate items in some muzeums, but everything I have seen called Ghetto have been reproductions.
The simple fact is that al most all original clothing and wood items were burned unpon liberation of the camps to help fight disease. I remember when the movie Schindler's list came out. I was living in Europe at the time and almost immediately the auction houses had "original" cloth items for sale.

http://www.worlddaggers.com/