It co-circulated with other Spanish silver and gold coins and was issued by El Banco Español Filipino de Isabel II (currently Bank of the Philippine Islands).
The banknotes were convertible to either silver pesos or gold coins at the bank's discretion.
The colonial government at the time allowed El Banco Español-Filipino to issue pesos fuertes up to one-fourths of its subscribed capital, or a maximum of PF 100,000, which was subsequently raised to 300,000 in 1855.
"[1] In 1868, the Spanish Revolution of 1868 overthrew Isabel II and forced her to exile in Paris.
Upon hearing the news, the bank decided to rename itself as El Banco Español-Filipino, dropping the "Isabel II" from the name.