Contemporary Green Patina Copper Hand Cut and Hammered Sperm Whale Plaque Consign Now DeptNantucket ArtSize29 ¾ in. x 38 ¾ in. Contemporary Green Patina Copper Hand Cut and Hammered Sperm Whale, mounted on wood board, by Heather Unruh 29 ¾ in. x 38 ¾ in. Please note that this auction has ended. Click here for an overview of this auction.