M 33 Export military gas mask (1933 ).
This hybrid gas mask has been especially made for the Nationalist Army during the Spanish Civil War.

It is made of an modified M 33 type facepiece on witch a German S-maske frontpiece is mounted in place of the Italian M 31 / M33 allowing to have the filter directly screwed on the mask

The common Italian head harness complete the mask.

The filter is made in Spain by Dagsa, a Spanish subsidiary of Dräger