I’m not quite sure where this Lumia 920 sits, in terms of where it came from, but it looks like it is/was available from an Australian E-Commerce site. Estore.com.au has a range of Lumia phones at variable prices, not always a bargain either, but on their site they feature this green model, and also the elusive grey 920.
Don’t get your hopes up though, from what I can gather, it looks like an opportunistic placeholder. There were hints back in March that there might be a green model, all from an image posted on Nokia Jordan’s Facebook page, but it was a very different green! Anyone tried to order one of these?