Brasswerx Copper Swiss Army Knife SAK Custom. Great patina, copper brasswerx , rare custom. The item "Brasswerx Copper Swiss Army Knife SAK Custom" is in sale since Tuesday, November 24, 2020. This item is in the category "Collectibles\Knives, Swords & Blades\Collectible Folding Knives\Modern Folding Knives\Factory Manufactured". The seller is "jgal8063" and is located in Round Rock, Texas.