cover 1929, VARIG flight cover, express airmail flight cover from Rio Grande to Porto Alegre, franked with 300r Rose Red (306) and two VARIG special adhesives (RHM nos. V-3A and V-5A(B+K)), tied by VARIG 18 JUN. 29 special cachets in purple, matching straight line 'Por Aviao Expresso EXPRESSO' flight cachet, very fine, very handsome est.