Commercial cover franked with 1920 200rs rose red 'Industry' issue and 1929 500rs purple (SG 330 & 472) and 1931 350rs red VARIG issue (Sanabria #V17) tied by PORTO ALEGRE national cds dated 5.VII.1933. Addressed to RIO DE JANEIRO with arrival marks on reverse. Note that this cover appears to have been sent via the national mail service rather than by Varig as there are no Varig markings present. Unusual.