Bidspirit auction | Portugal airmail. Letter sent by

Portugal airmail. Letter sent by registered airmail from Restauradores station (with handwritten inscription) to the United States of America, postage of 9$60 corresponding to 2$00 international postage (table of 6.11.1948), 4$00 registration fee and 3$60 airmail surcharge (table of 1.7.1948). Written by H. Santos Viegas