According to the industry reference, California Poineer Fractional Gold, by Walter Breen and Ronald J. Gillio, this piece was struck by Frontier & Co. circa 1864 to 1871. Listed by Breen and Gillio as an R-6, attesting to its scarcity. A fun little coin which “romanticized” the old west.
PCGS Cert #6434497
PCGS / NGC Population: 4/0