Mandalore the indomitable wore mandalore's helmet through the great sith war and after his death it passed to his successor,mandalore the ultimate,The helmet was a ruddy golden color and it prominently featured the mandalorian t-shaped visor. For decoration it was embosed with a series of concentric lines and,above the visor,it was adorned with two emblems of the mandalorian crusaders.
During the mandalorian wars Revan(then a jedi knight) killed mandalore the ultimate and took his helmet and hid it from the galaxy causing the mandalorians to fall into trumoil,this would continue until an unidentified mandalore found the the helmet and attempted to reunite the mandalorians yet this was unsuccessful until the arrival of mandalore the preserver.