| Typ: | Special Purpose Gas Mask M11 A1 |
| Hersteller: | MSA - Mine Safety Appliances Co. |
| Jahr: | ca.1955 |
| Filter: | fester Schlauch, Gewinde 1 1/5" x 14G 7/16" |
| Verwendung: | Armee, Industrie |
| Quelle: | Technical Manual TM3-205 - Protective Masks and Accessories |
| Inv.Nr.: | 2/ 11/390 |