Contained in…

Container	Area	Drop Chance
Fel Iron Chest	Zangarmarsh	Extremely Low (1% - 2%)
Knot Thimblejack's Cache	Dire Maul	Very Low (3% - 14%)
Large Mithril Bound Chest	Blackrock Spire	Extremely Low (1% - 2%)
Large Solid Chest	Blackrock Spire	Extremely Low (1% - 2%)
Large Solid Chest	Maraudon	Extremely Low (1% - 2%)
Solid Chest	Winterspring	Extremely Low (1% - 2%)
Solid Chest	Azshara	Extremely Low (1% - 2%)