Hello Mark McM;
I've looked at your photos of this medal though digital magnification. I have to say that I don't like it. This medal is known to be faked and some are from over 15 years ago (when I almost bought a bad one from e6ay).
To be specific, here are SOME of the features that lend to my conclusion. On the reverse, there is that frequently seen squashed ose mint pressing. But this one is irregular and looks spalded.
Where the ose and medal meet, there is the area where the coin edging is washed down to form the ose. On period medals the transition area is smooth and defined. This one is rough and hammered.
Again on the reverse, the crossed sword and rifle; the sword edges look uneven and crude.