Manufactured in 1990 for Ellett Bros. of Chapin, SC. Series of 12 guns. Series never completed by S&W because of because a breakup of the business relationship. The Last Cartridge was the May issue. Should have a scene engraved on the side plate with a man doing the last cartridge dance { old advertising art } with a Brown bear. Should also have a special calendar book . Model 57 with .500" target Hammer, .400 serrated trigger, red ramp front sight,white out lined rear with target grips. Info from the 3rd Edition of the Standard Book of Smith and Wesson. No value given. Hope that helps.