Gold 10K Skull and Crossbones Pledge Pin New Orleans Hausmanns

If anyone could help me out with some information about this pledge pin and what it is from. Is it for a fraternity? Medical School? Secret Society? The back is marked Hausmanns, which a New Orleans Jeweler that made a bunch of custom pieces. There are pearls on the piece but I am not sure if they are real. The piece is rather small, measuring about 3/4" wide and 1/2" tall. There is a chain attached and a c-clasp on the back. The piece is gold and is marked 10K. Any information is greatly appreciated. I would like to know what this pin is from.