Hi Chiffy, yup it's 100% legit, unopened - his nana was visiting a pal over in the states and she's been getting her to pick up Black Series figures for him - she picked up a bundle of various figures over a couple of months and I don't think she's a fan of the movies or action figure collecting', which kinda explains the doubler, I think!
Unfortunately, since it was in Nana's bag coming home, the box did take a little damage, which you can see in one of the pics.
Here's most of the haul he got, ANH Leia and Finn in First Order disguise seem to be away on a mission together...
And he managed to snag this guy yesterday...
Buuut...I'm afraid he already has Sabine bud - He's got to take a picture of all of his figures for a Scout's 'collector' badge
So you could maybe have a swatch and see if you've got anything that could fill his collection out then?