The Mithril Chain Mail of Lohengrin (-1) [28,+20]
+4 to INT, WIS, Stealth
Resist Acid, Lightning, Fire, Cold, Poison, Fear, Dark, Nether
Hold Life; See Invisible
Activates for heal (777), curing and heroism every 300 turns
Level 40, Rarity 9, 15.0 lbs, 135000 Gold

(Hengband 1.6.0)