20 Dollars Ponte 25 de Abril

The Ponte 25 de Abril in Lisbon — named for the date of Portugal's 1974 Carnation Revolution that ended nearly five decades of authoritarian rule — was built under the Salazar dictatorship in 1966 and originally bore the dictator's name. The renaming came swiftly after the revolution. Liberia's commemorative issues of this period were produced largely for the collector export market, with no meaningful circulation in Liberia itself, a practice common among small issuers licensing foreign landmarks for revenue.