12X4 CBS black plates "O" getter NOS 1960 (48/40 and 50/40)
12X4 GE GM Delco gray plates "D" getter NOS 1960 era (49/40 and 50/40)
12X4 RCA "D" getter NOS 1961 (47/40 and 48/40)
12X4 RCA "O" getter NOS 1963 (46/40 and 46/40)
12X4 RCA NOS 1965 (45/40 and 46/40)
12X4 Tungsol branded Raytheon black plates "D" getter NOS 1960 era (44/40 and 44/40)
12X4 Tungsol branded Raytheon black plates "D" getter NOS 1960 era (50/40 and 50/40)