拍品描述： KM-6. <strong>KEY DATE</strong> and <strong>RARE</strong> in any grade. From a minuscule mintage of 20,000. Well worn as indicated by the grade. Attractive slate in the open fields and amongst the devices with a blue sheen while the tops of the devices display a dove grey. A wholesome problem free example sure to excite and be a welcome addition to the next collection it enters. PCGS FINE-12 Secure Holder. Purchased from Charles D. Moore of Walnut Creek, California ca. 02/85.