S'WIT's gas masks
PRV-U
Country
Soviet Union
Use
Military
Years produced
1970's-1980's
Filter Thread
40mm GOST
1)Hose cover
2)Facepiece
3)Hose
4)EO-65k filter
5)Carrying bag
No hose
Stamps on the side
EO 65k filter
Threaded intake valve