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"DeForest" ER-534081 Electron Relay Tube W/Box-Tube has Open Filament-
$71.00 USD

Sold on: 2014-Feb-23

Marketplace: eBay
2 Treasure
0 Trash
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Detail:

DeForest BBT--Shaw base-ER tube--circa 1919-20-tube appears used w/open filament- Tip looks good--base tight-nice "Marconi" logo stamped on base-has both DeForest & Marconi markings- Box may or ma...




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