XF4

6CA7, EL34, XF3

Mullard

Branded RCA

6CA7, EL34

Mullard

Branded Tung-Sol

6CA7, EL34, XF4

Mullard

Branded Ge

EL34, 6CA7, XF2

Mullard

Branded Sonotone

EL34, XF4

Philips

Branded Valvo

EL34, 6CA7, SYO

Philips

Branded Mullard

EL34, 6CA7, SYO

Philips

Branded Amperex

EL34, 6CA7

RFT

Branded Trigon

6CA7, EL34

RFT

Branded International Servicemaster

EL34, 6CA7

RFT

Branded CEI

6CA7, EL34

RFT

Branded Fivre

6CA7

RFT

Branded Sylvania

6CA7, EL34

RFT

Branded Westinghouse

6CA7, EL34

RFT

Branded Realistic

6CA7, EL34

RFT

Branded National

6CA7, EL34

Sylvania

Branded RCA

EL34, 6CA7

Tesla

Branded Ultron

6CA7, EL34

Branded Giant Electronics Brand

EL34, 6CA7

Branded International

6CA7, SYO

Branded Rogers

6CA7

Branded Arcturus

6CA7, XF4

Branded Marconi

EL34, XF4

Branded Mullard

EL34, 6CA7, SYO

Branded Amperex