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10E/11639, OSRAM, AIR MINISTRY, KT61, BLACK BASE
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10E/11639, OSRAM, AIR MINISTRY, KT61, BLACK BASE

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10E/11639, OSRAM, AIR MINISTRY, KT61, BLACK BASE 

On offer today we have a beautiful Osram device.  It tests as 100% emission as you can see from the attached test data label courtesy of our AVO VCM163.   The envelope carries the etched ellipse cartouche as well as the whit print Air Ministry type number and the black base is tight to the envelope even though fitted with the Air Ministry brown junction sleeve.  The device clean uncorroded pins .

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