Abstract: There is provided an aqueous acidic plating bath for electrodepositing of a tarnish resistant alloy onto an electrically conductive substrate. This bath comprises compounds including metallic plating ions of cobalt, tin and a third metal taken from the class consisting of Periodic Group IVb metals and Periodic Group Vb metals, and combinations thereof. The resulting alloy deposit has general physical properties of a decorative chromium deposit and is an effective substitute therefor.