12X4 CBS black plates "O" getter NOS 1960 (48/40 and 50/40)
12X4 CBS NOS black plates "D" getter 1959 (48/40 and 48/40)
12X4 GE GM Delco gray plates "D" getter NOS 1960 era (49/40 and 50/40)
12X4 GE gray plates "D" getter NOS 1960 (50/40 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 black plates "D" getter NOS 1950's faded printing (49/40 and 50/40)
12X4 RCA black plates "D" getter NOS 1956 (49/40 and 50/40)
12X4 RCA Motorola black plates "D" getter NOS 1960 era (48/40 and 49/40)
12X4 RCA NOS 1965 (45/40 and 46/40)
12X4 Silvertone Sylvania "D" getter NOS 1960 era (46/40 and 48/40)
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)
