German Kareta-Nova
The Drager Kareta-Nova had a black rubber facepiece with large triangular eyepieces. This example features an inlet for use with a bayonet type filter, which is missing.
Similar masks in my collection: MSA All-Vision Chemical Cartridge, MSA All-Vision Diaphragm Chemical Cartridge, S&W All-Vision Diaphragm Chemical Cartridge, MSA All-Vision Diaphragm ChemOx