14536,5 Early blubber cutting spade marked SF. Attributed to one of several Nantucket Folger blacksmiths, possibly Samuel or Seth. It is very similar in design to other spades from the Folger family of whalecrafters. 20 7/8 in. long, 5 3/4 in. wide. Ca. 1820ís to 30ís. In near new condition.