Sidney Smith is an NPC in RuneScape Classic. She is a certer (like Niles, Miles and Giles in Draynor Village), and exchanges potions and other miscellaneous items of worth for bank notes. This was in the days before players could withdraw items from their bank in note form. She resided and worked in Yanille, but was not moved over to RuneScape 2 when it came out. Unlike Niles, Miles and Giles, she did not return in the form of a Random event, so Sidney Smith has not been seen since.