![ARGENTINA - 1945 - POSTAL STATIONERY: Circa 1945. 10c red 'Rivadavia' postal stationery envelope (H&G B42) with 'Sin Valor Postal' ZIGZAG overprint in blue for Official use cancelled with fine oval CORREOS Y TELEGRAFOS MATTALDI DISTRITO 11o cancel in red. Addressed to BUENOS AIRES. (ARG/9042)](http://latinamericanphilatelics.com/cdn/shop/products/ARG9042_{width}x.jpg?v=1708698984)
Circa 1945. 10c red 'Rivadavia' postal stationery envelope (H&G B42) with 'Sin Valor Postal' ZIGZAG overprint in blue for Official use cancelled with fine oval CORREOS Y TELEGRAFOS MATTALDI DISTRITO 11o cancel in red. Addressed to BUENOS AIRES.
Circa 1945. 10c red 'Rivadavia' postal stationery envelope (H&G B42) with 'Sin Valor Postal' ZIGZAG overprint in blue for Official use cancelled with fine oval CORREOS Y TELEGRAFOS MATTALDI DISTRITO 11o cancel in red. Addressed to BUENOS AIRES.