The Lucky Armadyl chestplate is a rare item that can be won from Treasure Hunter. It has the same bonuses and requirements as the regular Armadyl chestplate, but it is untradeable and has a different appearance. You will lose this armour if you die in the wilderness. If you are killed in the wilderness it will turn into 335k coins.
Despite it being reclaimable at Diango, if lost in the Wilderness whether skulled or not, it cannot be reclaimed.
This is item is not augmentable, and will display "You can't seem to work out how to augment that item" if attempted.