Argentine short-term Treasury bond. Lecops often are accepted as means of payment, and therefore are one of the types of Quasi-Monies in circulation in Argentina. They were widely issued by the federal government during Convertibility to make payments to provinces, suppliers and employees when the government ran short of cash.

The LECOP was a bond issued by Argentine national government to replace the Patacón, which was issued by provincial governments. LECOP (sometimes written as a common word, Lecop), stands for Letra de Cancelación de Obligaciones Provinciales ("Letter of Cancellation of Provincial Obligations").