12X4 RCA branded Westinghouse NOS black plates “”D”” getter branded 1962 era (49/40 and 50/40)

12X4 RCA branded Westinghouse NOS black plates “”D”” getter branded 1962 era

49/40

50/40

– Dynaco PAS-2, PAS-3
– Juicy Music Peach II pre-amp
– car radios