Steel Blubber Boarding Knife Whaling Tool, Cast Manufacturer’s Initials “N.A.”, circa 1840-1850 Consign Now DeptCollections, Maritime ArtsSizeLength 36 in. Sold for $2,684 Steel Blubber Boarding Knife Whaling Tool, Cast Manufacturer’s Initials “N.A.”, circa 1840-1850, with original rope work Turk’s knot hand guard. Length 36 in. Please note that this auction has ended. Click here for an overview of this auction.