Lot of two large old early industrial vintage bakelite sockets for audio jack style plugs. They are both marked on the socket face with "BLK" and "RED". These measure about 3 5/8" long. They are 1 5/8" long over the bakelite and 1 3/8" across the round bakelite boss. They have heavy brass inserts. The switches are stamped "303A".
They are splattered with what we think is orange shellac.