Czechoslovakia (Wehrmacht) Horak/ Techna gas mask 1934

In a good but used condition a rare early Czechoslovakian gas mask This is re-used gas mask by the Wehrmacht. Gas mask maker is the company Horak (at least the metal parts) but the rubber and other parts were made by the company Techna. It was made around 1934. Inside the mask on the rubber it is marked Techna XI.-34 The filter is the Plyma DF-1 and made by the company Plyma. It isstamped with the Waffenamt stamp and dated August 5 1940.