Tube maker with initials A II M?

Hi Friends,

I am cataloguing vacuum tubes and don't recognize this logo or tube type.  Does anyone know the maker and model? 

Thank you!

Sara Schechner

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High Sara,

the tube is a British Made gas filled voltage stabilizer. Click this link.

It was fabricated for the UK 'Admiralty and Marine'.

For more information google: 'Admiralty (United Kingdom)'.

No idea whio made it. Maybe Mullard?

Best regards,

Harald

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Thank you very much!

Sara

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Hello Sara

We have here an equal stabilizer named AW4.

Also the 10E/11449 is listed....

Regards

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