I am listing this as coin silver based on the time period that it was made and that t are no marks indicating it as sterling silver. It is engraved with the initials either J or S and W.This teaspoon is 5 7/8" long and the bowl of spoon is 1" wide. I am dating this spoon as made between 1807 - 1810 based on information I have found on Judah Hart. Information was from the site freepages.. Judah Hart worked from 1805 to 1807 with Alvan Wilcox in Norwich, CT as Hart & Wilcox, having purchased the business of Abel Brewster in Norwich, CT. They advertised in the Norwich Courier from May 1, 1805 - April 29 1807. Spoons bearing mark H&W with an index hand are known. After the 1807 sale of Wilcox's share, the mark becare J. Hart with index hand. Working from 1810 to 1816 with Eliphaz Hart in Norwich CT. Mark changed to H EH. In 1815 he bought land on Franklin Square in Norwich, which he sold in 1816 to Thomas C. Coit and Elisha H. Mansfield. He was then apparently in Griswold CT and later, probably 1822 in Ohio, w he died. Spots appearing in photo are from camera only.