Classic style for a classic drink, our hand-hammered copper Derby Mint Julep cup will grace the hand and disposition of the dearest Southern Belle. 12 Ounce capacity. .... Sertodo Copper is an international cooperative of master copper artesans based in Austin, Texas with workshops in the US and Mexico and a tradition of copperwork extending back over 1,000 years. We create superb equipment from 100% recycled, pure copper. Our unique style and superior quality will give you generations of beautiful service.