Headed 'Banco Nacional de Nicaragua' cover sent from MANAGUA with provisional oval ADMINISTRACION DE CORREOS MANAGUA D.N Nic C.A. rubber cancel dated OCT 27 1931 and 'Banco Nacional de Nicaragua Correspondencia Oficial cachet alongside with official 'Signature' franked in transit in CORINTO with 1931 3c light blue with '1931' overprint in black and 'OFICIAL' overprint in red (SG O671) tied by CORINTO cds's dated OCT 28 1931. Addressed to USA with additional CORINTO transit cds dated 27 SEP 1931 on reverse .