Auction # 1907 WORLDWIDE + ARGENTINA: First general auction of the year!

Registered airmail cover sent from Villa Adelina to Paraguay on 28/MAY/1974. The corresponding rate of $3.50 was paid for with strip of 5 Belgrano 10c. (GJ.1528) + Mar del Plata 300P. (GJ.1149B) used as 3P., VERY RARE! On 1 January 1970, a new currency was introduced, the PESO LEY 18188, and 300 Pesos Moneda Nacional (GJ.1149B) were equivalent to 3 Pesos Ley in 1974!