Another version of 10 tube with Oxide-Coated filament.
One of the best design and supported structure.
Raytheon 4-Pillar series have special design
that tube lovers want to keep in their collections.
Red sticker of 4-Pillar was unique and always attractive.
Less transparent when compare with mesh plate 210
but more impact and larger scale of music instruments.
Collective item with awesome sound too 😉
