Jamieson, Fausset and Brown on Nahum 2:9

9. silver ... gold--The conquerors are summoned to plunder the city. Nineveh's riches arose from the annual tribute paid by so many subject states, as well as from its extensive merchandise (Na 3:16; Eze 27:23, 24).

store--accumulated by the plunder of subject nations. It is remarkable, that while small articles of value (bronze inlaid with gold, gems, seals, and alabaster vases) are found in the ruins of Nineveh, there are is none of gold and silver. These, as here foretold, were "taken for spoil" before the palaces were set on fire.

glory out of all the pleasant furniture--or, "there is abundance of precious vessels of every kind" [Maurer].