MK BarZ “Double Headed Eagle” Reverse Stamped Round. By MK BARZ AND BULLION. Amazing custom stamped detail with MK BarZ Logo Stamped on reverse. This collectable round will not disappoint! Accompanied with a Certificate of Authenticity. MADE IN THE U. MK BarZ reserves the right to cancel any order that has resulted in price changes due to platform glitches & volatile precious metals market changes resulting in cost margins beyond our ability to honor.