... Engraving with colours. 5.Suitable for Promotional gifts Fine Copper.999 silver bullion Description:Production Type:Coin, medal ... , bullion, badge, insignia, etc. Material: pure gold, pure silver, copper, bronze, brass, zinc alloy, etc. ... embossed, painted, transfer printing, plated, welding, etc. Plating: gold, antique gold, silver, antique silver, cooper, etc. Delivery time: According to ...