拍品描述： 1860 Clark, Gruber & Co. $20 Die Trial. K-4a. Rarity-5. Copper. Reeded Edge. VF-35 (PCGS). OGH. A fair number of these were struck in copper, much to the delight of todays collectors as the 1860 Clark, Gruber & Co. "Mountain Twenty" struck in gold is a classic rarity that requires a formidable budget to purchase. Both sides exhibit richly original toning in copper-rose, the surfaces free of significant blemishes and uncommonly smooth for the assigned grade. Solid VF detail throughout, a handsome and inviting example of this classic Clark, Gruber & Co. design.

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