10 Pesos

Mountain Province is one of the more obscure Philippine guerrilla issuers of the Second World War occupation period. While many provinces in Luzon issued emergency currency after the Japanese occupation disrupted the banking system, Mountain Province's notes were produced under the authority of the provincial board rather than a military unit — a civilian administrative continuity that was itself unusual given the circumstances on the ground.

The series is notoriously scarce. Much of the province's wartime paper was either destroyed in the field or never formally redeemed after liberation, leaving the surviving population with worthless notes and no recourse.