King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
III Panamerican Post-congress in Madrid. Air Mail.
III Panamerican Post-congress in Madrid with overprint "Oficial".
III Panamerican Post-congress in Madrid with overprint "Oficial".
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
III Panamerican Post-congress in Madrid. Air Mail with "OFICIAL" overprint.
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".
King Alfonso XIII with overprint "República Española".