Italian Maschera Antigas I.A.C. M.33 (Spanish Export)
The Italian Maschera Antigas I.A.C. M.33 was made of smooth dark brown rubber. This version featured a metal inlet/outlet assembly, and was exported to Spain during the Spanish Civil War. It was made by Industria Articoli Caoutchouc around 1933.
Maschera Antigas = "Gas Mask"
Industria Articoli Caoutchouc = "Rubber Articles Industry"