Interesting. A few years ago, I purchased a reproduction from Todd Hogan and was disappointed to see that he had wrapped them in paper. I didn't know they were ever wrapped in paper when produced back in the 1940s. Guess I'm not so dissatisfied now.
I also have a K ration, but I just can't bring myself to open it. I'm almost sure the inside is compromised as I can hear bits of sand-like material in it when I lightly shake it. viewtopic.php?p=64124#p64124