World War 2 Nazi Germany DM40 Civillian respirator

One of the first masks to take a 40mm filter. The DM40 was issued to the civilian population in Nazi Germany during world war 2 in case of chemical weapon attacks.
The mask features a Reich Eagle stamp and is made of a surprisingly good quality rubber for the time.

British Light-Anti-Gas Respirator Mark 2

The first mass issued British gas mask to use replaceable filters.
It takes 60mm filters on the left cheek of the mask.
This mask was developed from the prototype Mark 1 LAG respirator, and the Mark 3 LAG design was used by Canada to create the C3 Gas mask.

British Mark 5 Respirator

Very similar to the Mark 4 but with a rubber tab that a microphone could be inserted into.
No canvas lining on this mask.
The Mark 5 was used in the 1973 Romero film "The Crazies"

British Mark 4 Respirator

British World War 2 Mark 4 respirator.
Features a box filter and a canvas lining on the rubber.