It looks OK. If you are worried just check the weight and dimensions.
Maybe ask a jeweller if he has access to an XRF (x-sen bunseki) machine. I did that recently here with a fake gold chain (marked as 18kt but was really 10kt)
so here's the coin
additional thoughts on genuinity are highly appreciated
here's a video
[youtube]http://www.youtube.com/watch?v=ym4jCXtBrFA[/youtube]