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Audio output Triodes II

PV5DE BBC Ediswan brass base top pip – Osram GEC type B brass base top pip – BBC Ediswan PV6DE brass base top pip

Ediswan BBC PV5DE GBP 450 pair.

Ediswan BBC PV6DE GBP 200.

Osram GEC type B balloon valve GBP 350.

R balloon Marconi – BTH B4 – Frelat Pip – Mullard R – SP16 Cosmos red – Balloon pip European – Arde AR – BTH

Marconi R type top pip £ 220

B4 made by British Thompson Houston £ 100

A Frelat top pip balloon receiving triode £ 150

Mullard R type top pip shown with bakelite base £ 100

SP16 Cosmos red top pip £ 80

European balloon top pip triode £ 80

ARDE AR £ 150

BTH top pip £ 100

R BBC British Thomson-Houston tinted glass top pip – Marconi VT10 Royal Air Force top pip – Marconi RZ-216 top pip tinted glass – R type Radions Ltd. tinted glass

BTH British Thomson-Houston type R balloon GBP 500.

RAF BBC top pip VT10 Valve Transmitting GBP 400.

BBC RZ 216 top pip tinted glass GBP 350.

R type Radions tinted glass top pip GBP 250.

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.

R Marconi Osram colour top pip – R Moorhead balloon top pip amber- R BBC BTH – R Marconi balloon metal base top pip triode

Marconi type R gold/amber tinted £ 750

Moorhead R type light amber colour circa 1921 £ 750

BTH British Thompson Houston R type original box £ 750

Marconi R type original box cherry red £ 750

R Marconi pip top – BTH B4 – Frelat R balloon – R Mullard – Cosmos SP16 red – R type European – ARDE Ediswan – BTH R

Marconi balloon R type top pip £ 250

Frelat R Dutch made £ 100

B4 BTH British Thompson Houston £ 150

Mullard R top pip bakelite base £ 150

SP16 red by Cosmos £ 80

R type balloon metal base top pip European £ 100

BTH R type long sleeve anode metal base top pip £ 125

ARDE Ediswan general purpose valve £ 150

R Moorhead balloon top pip – Edlon Type HVL top pip – D3HF Mullard brass base – Mullard ORA M – Osram GEC R metal base – Osram DER top pip

Edlon type HVL metal base balloon top pip boxed £ 200

Mullard D3HF dull emitter original box £ 120

ORA type M bright emitter Oscillator, Rectifier, and Amplifier £ 150

Osram GEC balloon type R on glass top pip £ 250

Moorhead US made balloon type R brass base £ 250

Osram D.E.R. Dull Emitter Receiving top pip original box £ 175

R Osram BBC pink top pip – Frelat R amber top pip – Marconi R fuchsia – Thorpe BBC KL pink

Frelat type R Dutch made top pip - amber £ 400

Marconi R type fuchsia top pip £ 500

Thorpe BBC 5-pin top pip type KL- amber £ 300

R type BBC 1925 black base top pip - pink £ 400

R Type Marconi tinted glass balloon -R3 balloon top pip – R type Philips balloon top pip

R type Marconi balloon tinted glass GBP 250.

R - R3 of French origin, balloon top pip GBP 200.

R type Philips balloon top pip GBP 200.