Hiya
Yeah it is Official GW, they were given to each store for promo use, to be displayed in the store (usually the window). I was working in Maidstone at the time and I'm pretty sure they were generally painted up as Ultramarines, but I don't think that lasted too long in most stores.
Ah! no wait! I think we got them unpainted actually, and painted them ourselves whatever chapter we wanted, and yes there should be some pipe work on the cheeks.
I'll check with the manager on Tuesday and see if he recalls what happened too our one (was quite a few years ago tho)
As for collectibility, well they were only given out one per store which at the time was about 200 ( I open to correction on this) so...... up to you on that one :smile-big:
I'll see if I can find out any more
cheers
Mick