Small printed registered official envelope franked with 1936 2c grey brown with 'M.I.' Ministry of the Interior overprint with serifs (SG OD57D) and 1938 25c carmine red & pink and 1939 10c maroon with 'SERVICIO OFICIAL' overprints (SG O673 & O680) all with small official 'Signature' handstamps applied directly onto the stamps in black tied by BUENOS AIRES cds dated 7 SEP 1941 with printed registration label also tied by the cds. Addressed locally within BUENOS AIRES. A nice combination of issues.