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(!!!) (Recommended Pair 1957) 5Z3G RCA NOS 1957 in gold colored boxes slightly tilted glass (57-61/40 and 57-62/40)

$ 52.99

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

1 tube) 57/40 and 61/40

1 tube) 57/40 and 62/40

 

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

 


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See more: vacuum tube
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