For Sale National branded Mullard CV4004 12ax7 tubes

To buy, sell, or trade in this section, you must have at least 50 posts and have two-factor authentication enabled.

J

just42dave

Well-known member
I've been digging through my collection and came up on four of these all 1970 ish ( not new sensor crap)

I knew right away what they were as they are such an odd design.
These are what I have researched as late 70 early 70s military issue as they do not have normal Mullard codes. They do have letters or numbers on the bottom in between the pins formed in the glass that help me track them to the Brimar plant so I was excited.

Not looking to make mint on RT folks but won't go extremely low and would rather not eBay.

100.00 a piece or make a deal for a pair
Shipped fnf
I have 4 and they are unused
 

Attachments

  • PXL_20251016_024200168.jpg
    PXL_20251016_024200168.jpg
    1.8 MB · Views: 20
  • PXL_20251016_024134203.jpg
    PXL_20251016_024134203.jpg
    1.6 MB · Views: 12
  • PXL_20251016_024139688.jpg
    PXL_20251016_024139688.jpg
    1.5 MB · Views: 13
  • PXL_20251016_024101602.jpg
    PXL_20251016_024101602.jpg
    1.4 MB · Views: 13
  • PXL_20251016_024048143.jpg
    PXL_20251016_024048143.jpg
    1.4 MB · Views: 11
  • PXL_20251016_024040888.jpg
    PXL_20251016_024040888.jpg
    1.7 MB · Views: 12
Last edited:
Back
Top