EP54, 300 Yv34, 37/39, 42. 1921. 10 cts sobre Entero Postal Certificado a la ida de GIJON a GLEINVITZ (ALTA SILESIA), el 29 de Abril de1921, con franqueo complementario de 10 cts MEDALLON, 10 cts UPU y 25 cts MEDALLON y la vuelta circulada por Correo Certificado de GLEINVITZ a GIJON, el 24 de Junio de 1921 franqueada con 10 pf, 25 pf, 30 pf, 40 pf y 75 pf e inutilizada con matasello OPPELN / (1). MAGNIFICA Y EXTRAORDINARIAMENTE RARA, SIN LUGAR A DUDAS SE TRATA DE LA TARJETA ENTERO POSTAL MAS IMPORTANTE Y ESPECTACULAR DE TODAS LAS CONOCIDAS, CON UN FRANQUEO CERTIFICADO NO FILATELICO EN AMBOS SENTIDOS Y UN UNICO FRANQUEO MIXTO CON SELLOS DE ESPAÑA-SILESIA. UNICO CONOCIDO Y PIEZA DE ALTISIMA IMPORTANCIA Y DE EXHIBICION.
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EP54, 300 Yv34, 37/39, 42. 1921. 10 cts on Certified Postal Stationery from GIJON to GLEINVITZ (UPPER SILESIA), on April 29, 1921, with additional postage of 10 medallon cts, 10 UPU and 25 cts MEDALLON and the return circulated by Certified Mail from GLEINVITZ to GIJON, on June 24, 1921 franked with 10 pf, 25 pf, 30 pf, 40 pf and 75 pf and canceled with OPPELN postmark / (1). MAGNIFICENT AND EXTRAORDINARILY RARE, WITHOUT A DOUBT IT IS THE MOST IMPORTANT AND SPECTACULAR POSTAL STATIONERY CARD OF ALL KNOWN, WITH A NON-PHILATELIC CERTIFIED POSTAGE IN BOTH DIRECTIONS AND A SINGLE MIXED POSTAGE WITH STAMPS FROM SPAIN-SILESIA. UNIQUE KNOWN AND PIECE OF VERY HIGH IMPORTANCE AND EXHIBITION.