Small printed registered official envelope franked with 1936 2c grey brown and 30c brown & yellow brown with 'M.I.' Ministry of the Interior overprints with serifs (SG OD57D & OD64D) and 1942 5c orange brown with 'SERVICIO OFICIAL' overprint (SG O718) all with small official 'Signature' handstamps applied directly onto the stamps in blue tied by 1. V. BUENOS AIRES R. cds's dated 21 OCT 1941 with printed registration label also tied by the cds's. Addressed locally to OLIVOS with arrival cds on reverse. A nice combination of issues.