12BH7 BRIMAR CV5042. BLACK PLATE.
Item Tag: 12BH7
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NIB BRIMAR /Sylvania 12BH7A Short Black Plate Halo Get Tube 12BH7 Great Britain
12BH7A Short Black Plate, Halo Getter Tube. NIB BRIMAR for Sylvania. made in Great Britain.
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Single nice 12BH7 BRIMAR brand as Mullard BLACK PLATES Preamp Tube UK Tested NOS
Best sounding are RCA, Brimar, Tungsol.Great For Hi-fi Applications. “IEC Mullard”(almost rubbed off)…AS PICTURED. With black ribbed plates, “O” halo getter and white printing as. VALUES TESTED:78/84.
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Pair (2) 1950’s CBS 12BH7 Preamp Tubes / One Strong One Weak
Here’s a 1950’s pair of CBS 12BH7 preamp tubes.
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12BH7 GE Halo Getter Long Pewter Plates Tube Balanced Triodes Tests NOS NIB Rare
This tube is a 12BH7 RCA preamp tube. Grey ribbed long pewter ladder plates with a halo getter. this Tube was tested on the Jackson model 103 where a typical NOS Tube will have a test result of around 38-40 and the minimum good value is 25.