1125(3). 1955. 50 pts violeta, tres sellos. MADRID a USA. MAGNIFICA, RARISIMO Y ESPECTACULAR FRANQUEO, MUY POCAS CARTAS CONOCIDAS CON EL USO DEL 50 PTS.
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1125(3). 1955. 50 purple pts, three stamps. MADRID to USA. MAGNIFICENT, VERY RARE AND SPECTACULAR POSTAGE, VERY FEW LETTERS KNOWN WITH THE USE OF 50 PTS.