Double destruct. Coin struck on an incorrectly cut disc by the die cutter, plus a fading designer monogram. Perfect state of preservation. In the coin collections of the last century, struck by machine in great quantities, it is not the quantity of coins that shows the quality of the collection, but the quantity of gems in it. There is no higher grade of gems than low-volume SAMPLES, and even rarer to them, created by accident, interesting minting errors (offsets, reverses).