A specific type of currency, identifiable by its denomination, issuing authority, and series year, represents a historical form of paper money once redeemable for silver. Its designation includes a letter that indicates the specific printing run within that series.
These certificates hold value for collectors due to their historical significance, scarcity, and the unique design elements present in the series. Their value is influenced by condition, rarity of the specific series and letter combination, and overall demand within the numismatic community. The design itself provides insight into the artistic and economic context of the era in which it was produced.