This looks like a Lego 10221 Super Star Destroyer, from the Ultimate Collector’s Series (UCS) Star Wars range.
But it’s not. It’s a Lepin 05028 Super Star Destroyer, from its Star Wnrs range — an original space-adventure series, like Ricky Rouse and Monald Muck. (Slightly closer to the camera, a third of the way back, is a Star Wnrs Imperial Star Destroyer, to the same scale.)
I’ve owned this kit for several months, but not found the time to actually build it. I used several days of this year’s Christmas holiday to assemble the 3,208 pieces into a 124 cm-long model.
Build quality was pretty impressive. It’s not Lego, and it goes for about one third of the price of the real thing: the pieces are not quite as nicely defined, and understandably lack the “Lego” logo on each stud. But most of the time I forgot I was working with a knock-off. I will definitely be buying and building more Star Wnrs kits: I have my eye on their Tantive IV Blockade Runner (especially if I can find a vendor who will supply it in the original box: most of them discard it, for some reason).