MANDET Commercial Market mask
Multi-layer thick rubberized fabric facepiece. Triplex glass eyepieces. Two        exhale valves in aluminium casings, one on each side of the mask. Aluminium tront piece

A six points rubber straps head harness completes the mask

Probabely, this mask has been in use in some French Firefighting Brigades in end of twenties / begening of therties