Posted on August 13, 2018November 23, 2020 by admin Nickel And Copper M Cog Head Badge Made this stylish “M” cog head badge for a customer. Nickel Cog with a Copper M, the copper is treated with liver of sulfur to give it a deep dark finish. Post navigationPrevious post: Pewter Cast “Gem” EarringsNext post: Krampus Head Badges