... coins with carabiner Materialbrass, zinc alloy, stainless steel, iron, pewter, etc Surface Finishgold,silver,nickel,antique etcPlatinggold,silver,bronze,nickel,chrome,copper,anodized plating,misty plating ... ,brushed brass anti-(gold,silver,copper,bronze)Processingstamped brass and iron,die casting,spin casting,photo etching ...