coronation_has_proper_artifact_trigger

coronation_has_proper_artifact_trigger = {
	trigger_if = {
		limit = {
			faith = {
				coronation_proper_artifact_crown_trigger = yes
				coronation_proper_artifact_regalia_trigger = no
			}
		}
		any_character_artifact = {
			artifact_slot_type = helmet
		}
	}
	trigger_else_if = {
		limit = {
			faith = {
				coronation_proper_artifact_regalia_trigger = yes
				coronation_proper_artifact_crown_trigger = no
			}
		}
		any_character_artifact = {
			artifact_slot_type = regalia
		}
	}
	trigger_else = {
		any_character_artifact = {
			OR = {
				artifact_slot_type = helmet
				artifact_slot_type = regalia
			}
		}
	}
}

As written in game/common/scripted_triggers/10_ach_scripted_triggers.txt.