They are new in a sealed package and included a 60mm brand new filter as well as a chemical hood. These masks are made for the Yugoslavian army in the 70s and 80s. All the kits are unused and still can be used to provide protection.
 
These protective masks are intended to protect the respiratory organs, face, and eyes from the effects of toxic agents, radioactive dust, and bacteriological aerosols. However, we do not make any guarantee due to the age of these masks.