While I can't say for sure what the symbols are, they do not appear to be the same ones seen on the PP1 pack.
While I know this doesn't answer your question... here are some details found on the bottom of the Supertrooper pack.
Here is a comparison of the PP1 to the Supertrooper. I see similarities in a mirrored pack, but even then, I don't think they are the same symbols.
You are still my hero! Check out my Mandalorian Protector thread in the expanded universe/custom section and leave a comment.
any updates on a template for these?