Hey Guys! I recently got this Experimental Jungle Bladder to add on to my Experimental collection. Both the Bladder and the case are dated '44 and USMC. Its in pretty good shape other then a little rust staining in the back. If you have any information on it please post because I would love to learn more about it! I'm not really sure if its rare or not? I also posted this on USMF its just i would like multiple opinions lol.