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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4004 | Double Triode SQ ECC83 | 1956 | B9A | 
 | 6057 M8137 VX7059 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4008 | Triode | 1953 |   | 
 | 5719 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4015 | Pentode SQ EF92 | 1953 | B7G | 
 | 6065 M8161 QA2400 VX7075 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4016 | Double Triode | 1952 |   | 
 | 5814A 5814WA 5814 CV4003 CV4032 CV5046 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4022 | Triode | 1960 |   | 
 | 6135 M8080 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4032 | Double Triode |   |   | 
 | 5814WA | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4033 | Double Triode - Flying Leads | 1956 | B9A | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4034 | Double Triode | 1956 | B9A | 
 | CV4003 F/6067 M8149 VX7120 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4035 | Double Triode | 1956 |  | 
 | CV4004 F/6057 M8214 VX7128 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4041 | Pentode | 1956 |   | 
 | CV4040 S6F17F | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4049 | Double Diode SQ | 1956 |  | 
 | M8237 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4050 | Pentode - Flying Leads | 1954 |  | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4051 | Double Triode | 1955 |   | 
 | CV4068 F/6158 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4054 | Voltage Reference Tube | 1962 |  | 
 | F/5654 M8142 QS1213 VX8142 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4061 | Rectifier EHT | 1958 |   | 
 | CV2289 CV9016 U37 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4066 | Voltage Reference Tube | 1957 |   | 
 | 5783WA M8190 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4067 | Beam Tetrode | 1956 |   | 
 | CV471 F/7001 M8167 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4068 | Double Triode | 1960 | B9A | 
 | 13D3 6158 CV2212 VX7124 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4069 | Double Triode | 1956 |   | 
 | CV2212 CV4068 F/6158 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4072 | Rectifier | 1963 |   | 
 | CV404 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4075 | Rectifier EHT | 1957 |   | 
 | U60 VX3509 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4076 | Double Triode | 1957 |   | 
 | CV858 M8179 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4082 | Pentode | 1958 |   | 
 | A2426 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4086 | Pentode (Flying Leads) | 1959 | B9A | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4092 | Pentode | 1959 |   | 
 | 5672 CV2238 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4093 | Pentode | 1959 |   | 
 | 5678 CV2254 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4094 | Pentode | 1959 |   | 
 | 1AD4 CV2237 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4095 | Tetrode (Special Version) | 1959 |   | 
 | VX9186 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4096 | Pentode | 1959 |   | 
 | VX9185 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4103 | Double Diode |   |   | 
 | CV4007 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4105 | Triode | 1961 |   | 
 | A2744 VX3527 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4106 | Pulse Tetrode | 1960 |   | 
 | VX3524 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4109 | Double Triode | 1962 |   | 
 | 7308 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4110 | Double Triode (Low Noise) | 1962 |   | 
 | 7308 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4111 | Double Triode (Low Noise) | 1962 |   | 
 | 7308 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4113 | Double Triode (Gold Pins) |   |   | 
 | CV4003 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4114 | Double Triode (Gold Pins) |   |   | 
 | CV4014 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4115 | Double Triode (Gold Pins) |   |   | 
 | CV4020 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4118 | Voltage Reference Tube |   | B7G | 
 | CV4048 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4120 | Triode |   |   | 
 | CV408 E2975 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4122 | Double Triode |   |   | 
 | CV4003 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4123 | Rectifier EHT | 1965 |   | 
 | VX3549 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4501 | Pentode (Flying Leads) | 1960 |  | 
 | 5A/172G 7432 CV465 VX7098 VX8121 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4502 | Pentode (Flying Leads) | 1960 |   | 
 | 5A/173G 7433 CV466 VX7099 VX8122 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4503 | Pentode (Flying Leads) | 1960 |  | 
 | 5A/174G 7434 CV472 CV476 VX7106 VX8124 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4504 | Diode (Flying Leads) | 1962 |  | 
 | 2S/141G 7435 CV469 VX7126 VX8123 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4505 | Rectifier HW (Flying Leads) | 1957 |   | 
 | 7436 CV473 EY70 VX8155 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4506 | Pentode (Flying Leads) | 1960 |   | 
 | 5A/175G VX7507 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4507 | Triode (Flying Leads) | 1960 |   | 
 | 7437 CV468 EC70 VX8156 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4508 | Pentode (Flying Leads) | 1961 |   | 
 | 7438 CV467 EF70 VX8240 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4509 | Triode (Flying Leads) | 1958 |   | 
 | F3A1 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4510 | Triode (Flying Leads) | 1958 |   | 
 | F3A2 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4516 | Voltage Reference Tube | 1959 |   | 
 | CV4066 GD85WR VX8190C VX8253C VX9174 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4517 | Pentode (Flying Leads) | 1960 |   | 
 | 5A/172G VX7517C VX8121K | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4518 | Pentode (Flying Leads) | 1960 |   | 
 | VX7518C | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4519 | Pentode (Flying Leads) | 1960 |   | 
 | CV2387 VX8124 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4520 | Series Stabiliser | 1961 |   | 
 | CV4038 VX3520 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| CV4523 | Thyratron (Tetrode) | 1960 |   | 
 | CV474 VX9181 | 
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