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Tung Sol 6977 subminiature tuning indicator, equivalent to DM160 and CV6094. Markings on the valve are T.S. 6977, Made in USA, 3226431-

6977 size indication The valve measures 26x5mm.

See it working at Åke's Tubedata

6977 in card

6977 box
The box carries the markings:
5960-654-3639
ONE EA ELECTRON TUBE
6977 DATE PKD 5/64 (A)
(36-600)64-13014
MFD BY TUNG-SOL ELECTRIC INC

 .6977

Thanks to Bill Wagner for providing this valve.

This file was last modified 15:37:43, Saturday November 12, 2011