What kind of silver has a horse WSB and lion emblem on it?

Made by W.& S. Blackinton Co. from Meriden, Connecticut, I believe. Markings include a horse (or unicorn's) head facing right, the initials "W & SB", the lion facing left. Probably also marked as EPC or EPN (electro-plated copper or nickel). If Electro plated, then not very valuable.