1860 Clark, Gruber & Co. Twenty Dollar Die Trial - K-4b, Gold-Plated Copper

Coin Details

Description

This remarkable gold-plated copper die trial comes from the dies of Clark, Gruber & Company's twenty-dollar gold piece — the largest denomination struck by any private minter during the Pikes Peak Gold Rush. Austin M. Clark, Milton E. Clark, and Emanuel H. Gruber established their banking and minting operation in Denver City in 1858, quickly becoming the most trusted private coiner in the region. Their $20 piece featured a representation of Pikes Peak on the obverse with "PIKES PEAK GOLD" and the denomination, while the reverse displayed an eagle design. The gold-plated copper composition of this die trial is particularly intriguing — the copper core allowed economical die testing while the gold plating simulated the visual appearance of the finished gold coin, potentially serving as a presentation or approval piece. Clark Gruber coins were widely accepted in commerce because the firm maintained its reputation for honest weight and fineness. In 1862, the federal government purchased the Clark Gruber facility and equipment, which became the foundation for the United States Assay Office in Denver (and eventually the Denver Mint). Die trials from Clark Gruber's operation are among the most historically significant territorial numismatic artifacts.

Rarity Notes

Extremely rare. Gold-plated copper die trials from Clark Gruber are virtually unique survivals; the firm's gold coins themselves are major rarities.

Cross References

Kagin-4b