41-MTL Cossor , tests with 75%, equivalent to REN904, seriously rare item
Out of stock
Cossor 41-MTL, equivalent to Telefunken REN904. Really rare collectors tube!
This tube has seen some use but still tests with 75% of a new tube.
The coating looks ok with some bigger stains and storage dirt but overall the coating is ok and does what it should. Please take a look at the pictures. The tube is in good working condition.
This tube came from a closed down radio shop with many rare tubes from the 1930s.
This is a very rare tube and a perfect fit for any serious pre-war tube collection….