Original unused wartime Finnish training filter for m/38 gas mask. The filters are identical to normal m/38 gas mask filters on the outside, but probably do not have the capability to filter gasses like real ones.
These are dark green filters with a painted red text HARJ.SUOD. on the side. The text is an abbreviation of “harjoitussuodatin”, which translates to “training filter”. These filters came to us packaged in a large cardboard box that was stamped in 1940. Each filter is also in its own cardboard box, but there are no date stamps on them. Each filter comes with its cardboard box.
Sold as a collectible, not for use.