Bulgarian Противогаз Тип 2
The Bulgarian Противогаз Тип 2 was made under license by Drager. It had a fabricized rubber facepiece with replaceable glass eyepieces, and side exhale valve. This example was made by Д.В.Ф. in 1939.
Противогаз Тип = "Gas Mask Type"
Д.В.Ф. = "Darjavna Voenna Fabrika"
Similar masks in my collection: German GM200