Title: United States pattern, trial, and experimental pieces; being a list of the pattern, trial and experimental pieces which have been issued by the United States mint from 1792 up to the present time.
Authors: Adams, Edgar Holmes, 1868-; Woodlin, William Hartman, 1868-; Woodlin, William Hartman, 1868-
Publisher: The American Numismatic Society,
Year: 1913
Subjects: Numismatics United States; Coins.