Solid AU surfaces with just the slightest amount of cabinet friction, this popular piece of Pioneer gold is popular amongst collectors of all types. Clark, Gruber & Co., Leavenworth, Kansas bankers, formed a branch of their establishment in Denver after gold was discovered in the region in the 1850s. Clark, Gruber became the largest mint in the Territory. Its operation would subsequently form the basis for the Denver Mint. CAC approved for quality.