Circa 1973. Cover with typed 'E. Casal Gari, C.Correo 1707, Montevideo. Uruguay' return address at top left and 'CORREO EXPRESSO' below franked with 1972 100p light emerald and pair 150p chocolate (SG 1522 & 1523) tied by large boxed SERVICIO EXPRESO CORREO DEL URUGUAY CASA CENTRAL BUENOS AIRES Y MISIONES cancel in red with two different printed red on white 350p 'Express' labels in reverse both surcharged '$350.-' in blue (one is for the internal part of the journey and one for the external part to Argentina). Addressed to BUENOS AIRES, ARGENTINA with 1974 stamp exhibition publicity label on reverse. A high rate for express mail.