(!) (BEST PAIR) 12D4 RCA black plate NOS 1960's (52/40 and 52/40)
$ 9.99
1 pair) 12D4 RCA black plate NOS 1960's (MB) same date codes
52/40
52/40
See more: vacuum tube
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 (BEST PAIR) 12D4 RCA black plate NOS 1960's (52/40 and 52/40) "Pin It")