[Thursday] Weird RI Tibe

[Lens Email]

Possibly, CeCo had a lot of unique numbers that may have been to get around patents.

Len

Sent from my iPhone

> On Jan 25, 2022, at 1:55 PM, Michael Thompson <michael.99.thompson at gmail.com> wrote:
> 
> Maybe they didn’t put a number on it because it can be substituted for many different tubes?
> 
>> On Jan 25, 2022, at 1:29 PM, Lens Email via Thursday <thursday at newsm.org> wrote:
>> 
>> Picked up a weird CeCo tube. 2 the same actually. They don’t have a tube number. They just have a label they says, “Power Amplifier Use In The Last Audio Stage Only”
>> 
>> The CeCo catalog I have says it’s a type F
>> 
>> Here is a photo and specs 
>> 
>> <image0.jpeg>
>> <image1.jpeg>
>> <image2.jpeg>
>> 
>> 
>> Sent from my iPhone
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