Argentina - post marks: 1868 postmark "H" in diamond of bars of Humaitá, used on
Argentina - post marks
1868 postmark "H" in diamond of bars of Humaitá, used on 1868 issued stamp Manuel Belgrano 10c. green, fine. This handstamp was introduced on October 12th, 1868 at the new post office of Humaitá during the Paraguayan (Triple Alliance) War, and was used till the P.O. was hand-over to the...