Bolivia 1933-35 Chaco War Military Mail. 3 covers, including 1933 military field post with purple oval sawtooth "28 Dic 1933 Gran Chaco" alongside blue triangular "Servicio Etapas Tres Pozos", blue "Censura" on reverse; 1934 with green "Censura… Campaña del Chaco", etc; 1935 fancy "Cochabamba" registry cancel with oval sawtooth "Correo Militar…Cumando Primer Guerro" all purple, "Censurada" and other markings on reverse; very interesting and very scarce, seldom offered covers, F.-V.F. lot. Estimate  $300 - 400. $0 (Image)