the three-pronged hook of gold refers to Christ, for in medieval allegory the hook with which God the Father catches the Leviathan is the crucifix. The golden trident is, of course, an allusion to the Trinity
Jung identifies the golden trident-hook in Dorn’s alchemical allegory as simultaneously a Christological symbol and a Trinitarian figure, with Manichaean roots in which the hook baits the powers of darkness using the Primordial Man equated with the collective unconscious.
, Alchemical Studies, 1967thesis