Italian Maschera Antigas P.43

The Italian Maschera Antigas P.43 featured unusual twin exhale valves on the cheeks.  This example was made in 1934.

Maschera Antigas = "Gas Mask"

 

Similar masks in my collection:  Belgian AG5

 

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Rubber stamp

Manufacturer, model, and date stamp on cheek "P43 - II C.C.M. Lic. No2 5-34-XII"