Italian Maschera Antigas I.A.C. O.39
The Italian Maschera Antigas I.A.C. O.39 was made of light brown rubber and featured two small round glass eyepieces for use with optical devices. This example was made by Industria Articoli Caoutchouc in 1940.
Maschera Antigas = "Gas Mask"
O = Ottico = "Optical"
Industria Articoli Caoutchouc = "Rubber Articles Industry"
Similar masks in my collection: Italian O.41Rs