45 Tubes manufactured by Sylvania

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  12AD7

  Branded Sylvania

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  12AD7

  Sylvania

  Branded Rauland

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  12AX7

  Sylvania

  Branded Rad Tel

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  12AX7

  Sylvania

  Branded Zenith

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  12AX7

  Branded Sylvania

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  12AX7

  Branded Sylvania

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  12AX7

  Sylvania

  Branded Setchell Carlson

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  12AX7A, ECC83, 7025

  Branded Sylvania

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  12AX7A

  Sylvania

  Branded Fender

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  12AX7A, ECC83

  Branded Sylvania

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  12AX7WA

  Branded Sylvania

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  12AX7WA

  Sylvania

  Branded Amperex

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  12BH7A

  Branded Sylvania

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  12BZ7

  Branded Sylvania

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  12DF7

  Sylvania

  Branded Arcturus

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  2C51

  Branded Sylvania

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  5670

  Branded Sylvania

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  5692

  Branded Sylvania

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  GZ34, 5AR4, F32

  Mullard

  Branded Sylvania

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  5R4GY

  RCA

  Branded Sylvania

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  6681

  Marconi Radiotron

  Branded Sylvania

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  6681, 12AX7

  Branded Sylvania

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  6973

  Branded Sylvania