Registered airmail cover franked with 1957 pair 1G cerise and pair 1.30G brown purple (SG 804/805) plus pair of 90c ultramarine 'Arms' issue with 'DIA N. UNIDAS 24 Octubre 1945-1956' unofficial overprint in red (See note in SG Page 321) tied by ASUNCION cds's dated 24 OCT 1957 with printed registration label alongside. Addressed to ARGENTINA with arrival cds on reverse.