Anyone know what these tubes are?

resource

New Member
Apr 17, 2017
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Hobard, Australia
We've recently come into possession of a lot of valves at work. I've managed to find at least a little info on just about all of them, but I can't find anything on these 2, and we have a bunch of each of them. Anyone know what they are, and maybe even what they'd sell for?
 

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JackD201

WBF Founding Member
Apr 20, 2010
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Manila, Philippines
6-pin , grid at top, a 75 tube perhaps?
 

JackD201

WBF Founding Member
Apr 20, 2010
12,308
1,425
1,820
Manila, Philippines

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