An experimental valve from M-OV, the E2185 looks to be a triode but no other details are available.![](../pics/abh0200a.jpg)
The serial number is 19 and this would have been supplied to the UK government or one of the armed services.![](../pics/abh0200b.jpg)
The lower mica reveals an indirectly cathode and single grid.The wide glass tube envelope is 29 mm in diameter, and excluding the IO base pins is 77 mm tall.Reference: Observation. |
Updated October 14, 2015.
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