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R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 2

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 3

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 4

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 5

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 6

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 7

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 8

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 9

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 10

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 11

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 12

R BBC Ediswan top pip - R type ES - HK2 BTH top pip - Marconi BBC DER - Image 13

R BBC Ediswan top pip – R type ES – HK2 BTH top pip – Marconi BBC DER

Early Ediswan type R GBP 180.

R type balloon by ES GBP 150.

HK2 by BTH British Thomson-Houston GBP 100.

DER balloon metal base GBP 250 pair.

Category: Audio output Triodes II

Description
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Description

Early Ediswan type R receiving valve in excellent shape used on BBC sets.

An obscure R type balloon made by ES as reported on valve’s base.

The HK2 was a dull emitter by BTH British Thomson-Houston

Production for the DER started in 1921. The DER has already been shown on this website, please check it out. We remind these are a pair of Dull Emitter Receiving triodes.

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