Yes, it was given to Theo Hardeen, his brother. Lucky for us Hardeen saved it instead of destroying it.
Years later the Houdini Museum in Niagra Falls, NY caught fire and destroyed many of the remaining props... but not all of them. Many are in the hands of Sid Radner (related on Houdini's wife's side of the family. Her family name was Rahner before it was later "Americanized" to Radner) and occasionally pieces come up for auction commanding very high prices from collectors around the world.
I thought his brother's name was Theo, but I didn't want to commit that to my post, just in case. I believe it was just a couple years ago (there was a tv special on it on either the History channel or Discovery channel) that they showed an auction of some of Houdini's props. It was very interesting to see, and some of the items did get very high prices. I would love to have a prop that Houdini actually used.