The S.B.A. L.702 was the most abundantly produced Belgian gas mask before and during World War II. They were made out of high quality rubber with non-replaceable glass eyepieces. These were for civilian use. The top two examples are equipped with a 25mm filter, while the bottom example was fitted with a 40mm filter for export to Sweden and designated "Typ 14". All were made by Société Belge de l'Azote between 1938 and 1940.
Société Belge de l'Azote = "Belgian Society of Nitrogen"
Similar masks in my collection: N/A
Model and size stamp on chin of first mask "L.702 MODELE DEPOSE TAILLE 2" "70"
Filter bottom view
Filter inspection stamp side view
Model and size stamp on chin of second mask "L.702 MODELE DEPOSE TAILLE 2" "502"
Manufacturer stamp on cheek of second mask "Ste BELGE DE L'AZOTE ET DES PRODUITS CHIMIQUES DU MARLY" "COUVRE-FACE Brevete L 702 Type agree par le gouvernement No 158"
Inspection stamp on cheek of second mask
Stamp on cheek of third mask "Typ 14" with Swedish crowns
Filter for Swedish Typ 14 bottom view
Filter for Swedish Typ 14 side view