Oddly, further photos are too large to upload. If it's a fake it's a VERY good fake - same labels and 'authentic' labels etc, fight strap and up to date sponsors.
If it was a prototype I would expect them to do one, with a random player so you could see how name and number look. (Batch 41 in this case)
I picked it up as I have all green Devils jerseys - that I know of - hence the "what the hell is that?!" Moment on eBay! On reflection I think this is the green prototype the Devils would have dropped last year - instead opting for the black CC jersey. ISTR there is often a decision to make between the third jersey being black or green. Would make sense. And it also means they definitely made the correct decision to go with the city scape!