Yes Tubby, that one is genuine.
If you look to the right of the W around the border you'll see a little < shaped notch in the black background. This coupled with the non coloured in recycle symbol is how you tell if they're genuine. Fakes don't have the notch and have black recycle symbol.
Older AW's may have solid black symbols and still have the little notch but it's the newer ones that combine both. If they don't have the notch, they're fake.
All this information came from another well known, exceptionally well trusted forum thread (Not UKV) and can be found
here.
Which pisses me off because I think quite a few of my AW's, all except my 18500's in fact are fake.
Hope this helps.
Very good photo clearly showing the point in question by the way