1811 (April 11). Entire letter from Tarragona (Spain) to Montevideo, conveyed through the Atlantic by the Spanish Royal Fleet. It is believed that this letter landed in Montevideo in a closed case and was transported to Buenos Aires by a “nave de registro”, entering this city for the application of the “España.” Straight-line in red (Kouri type VII), being forwarded to its final destination. Very few covers are recorded, sent to Montevideo, exhibiting any “España” postmark. Ex Camino and Sitjà. (Image)

1926 (Aug). Cover flown from Rio de Janeiro to Montevideo, franked by 1924-32 200r vermilion-rose, tied by Rio de Janeiro cds and neat "AVIÃO "BUENOS AYRES" / =RAID= / New York-Rio de Janeiro-Buenos Ayres" framed hs in violet black. Only ten covers flown, a rarity of South American early airmails. Note: Carried from Rio de Janeiro to Montevideo by the seaplane "Buenos Ayres", piloted by Bernado Duggan, E. Olivero and Ernesto Campanelli. According to the "El Correo Aéreo Rioplatense" handbook by Bousquet, the widow of Bernardo Duggan stated that ten covers were dispatched to Montevideo. (Image)