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4 Vintage Military MS-PEN 10E/21 Premium Vacuum Audio Vacuum Tube Valve - Bangybang.tube

Listing includes 10 tubes.

Brand: MS-PEN

Type: Premium Vintage Vacuum Tube

Model:  10E/21

  • Chrome Top
  • Glass Envelope
  • Black base
  • 7 Pin

    Country of Manufacturer: USA.

    Collectible item.