The 1979 Star Destroyer from Kenner comes loose as shown. The upper hull is made of diecast metal while the lower hull is plastic. There is a closeable hangar bay that originally accommodated a Rebel Blockade Runner (not included).
Overall the Star Destroyer takes up a very small footprint on a shelf and despite it's age and relative wear still displays very well.
*Star Wars Armada Imperial Star Destroyer is for comparison only and is not included*