The 'unicorn' or young bull with ONE horn signifies: kunda PLUS śṛṅgi 'fine gold PLUS gold for ornaments'.
kunda śṛṅgi'horned young bull'
Thest two categories in a wealth accounting system set the framework for the ultimate evolution of monetary system and the Gold Standard in the world.
kunda 'one of the nine treasures of Kubera' Ta. kuntaṉam interspace for setting gems in a jewel; fine gold (< Te.). Ka. kundaṇa setting a precious stone in fine gold; fine gold; kundana fine gold. Tu. kundaṇa pure gold. Te. kundanamu fine gold used in very thin foils in setting precious stones; setting precious stones with fine gold. (DEDR 1725). The vernacular expression is kundan jewellery to signify jewellery made with gems, jewelw and fine gold.
शृङ्गिः śṛṅgiḥ शृङ्गिः Gold for ornaments.
शृङ्गी śṛṅgī शृङ्गी 1 Gold used for ornaments. -Comp. -कनकम् gold used for ornaments.
शृङ्गकः कम् śṛṅgakḥ kam शृङ्गकः कम् 1 A horn. -2 A horn of the moon. -3 Any pointed thing.
शृङ्गिन् śṛṅgin शृङ्गिन् a. (-णी f.) [शृङ्गमस्त्यस्य इनि] 1 Horned. -2 Crested, peaked.
This explains why a śṛṅgin 'horned' animal is displayed on thousands of indus script inscriptions.