Antique Whale Ivory Snatch Block and Whalebone Single Block Consign Now Dept19th Century Scrimshaw, Decorative ArtsSizeLengths 3 ¼ in. and 2 ¾ in. respectively Antique Whale Ivory Snatch Block and Whalebone Single Block, circa 1850. Lengths 3 ¼ in. and 2 ¾ in. respectively Please note that this auction has ended. Click here for an overview of this auction.