[terjung]

I'm no autograph expert, but the on-card signature has enough differences from ones that are posted to give one pause. (i.e. the loops touching on "C", the apparent pause in the "C" prior to making the first loop, the beginning stroke of the "B", etc.) Interesting to note that there are no quotation marks around the "Chief" in your example.

Suffice it to say that attaining that LOA from a respected source is going to be important for you. Good luck! I hope for your sake that it's real.