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(!!!) (Best Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (59-60/40 and 60-60/40)

$ 54.99

1 pair) 5Z3G RCA NOS 1957 same date codes in gold colored boxes - slightly tilted glass

1 tube) 59/40 and 60/40

1 tube) 60/40 and 60/40

 

5Z3=5U4G with UX-4 pin base (same specs)

 


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See more: vacuum tube
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