10 Tubes manufactured by Marconi Radiotron

• 

  

  12AU7A

  Hitachi

  Branded Marconi Radiotron

• 

  

  

  12AU7A

  Branded Marconi Radiotron

• 

  

  

  

  

  

  

  

  

  12AX7

  Branded Marconi Radiotron

• 

  

  12BZ7

  Branded Marconi Radiotron

• 

  

  

  5670

  Ge

  Branded Marconi Radiotron

• 

  

  

  

  

  5751

  Branded Marconi Radiotron

• 

  

  

  

  

  

  

  5963

  Branded Marconi Radiotron

• 

  6681

  Marconi Radiotron

  Branded Sylvania

• 

  

  

  6681

  Branded Marconi Radiotron

• 

  

  5AR4, GZ34, F32

  Mullard

  Branded Marconi Radiotron