The MC-1 is a polish copy of the Czech CM-3. It was destined for Polish Army and Civil Defense, but adopted only by the second formation and used till the end of Cold War.
 
Super Grade
Unused filter
Raindrop Pattern camo bag
Size 2, 3 Od Tan, or size 1 grey rubber mask
Still has white rubber preservation chalk. This will wipe off with a damp cloth if required.
6 Point adjustable straps