Rubber diaphragm
Case for rubber diaphragm, "Ceyloc" brand, Europe, 1935-1965
Rubber diaphragm, case, "Ceyloc" brand, Europe, 1935-1965
Case for rubber diaphragm, "Ceyloc" brand, Europe, 1935-1965
Rubber diaphragm, case, "Ceyloc" brand, Europe, 1935-1965