Full Health Item
From the Super Mario Wiki, the Mario encyclopedia
A Full Health Item, also simply referred to as "Health", is an item that appears in Wario Land 4. It is represented by a box similar in shape and size to the jewel piece box and the CD box. When opened, a Gold Coin drops out, and a large heart that changes color with a crown hovers above the open box. If Wario collects it, his Heart Meter will be fully replenished.