This mark is a little difficult to discern. It could be either “JS” or “IS”. Douglas Bennett records James Scott as working between 1809 and 1820 with one of his marks having a pellet between. The tongs are delightfully Irish with every characteristic you would expect from Irish tongs, including the engraved star at the tops of the arms. I have dated them at c1809 because of the slightly rounded hallmarks which were used in 1808 and 1809.