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Amperex Bugle Boy 19D8 / UCH81 Vacuum Tube - Etsy
Simonetta Quelle GmbH Röhrenradio Chassis 6 Tube Telefunken, Guitar Tube-Combo Amplifier-Preamplifier. For Tube Enthusiast DIY. Vintage from the 1958, Germany | Reverb
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UCH81 @ The Valve Museum
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UCH81 ELECTRON VACUUM TUBE VALVE CVC | eBay
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Philips UCH81 Vacuum Tube | Valve
TUBE UCH81: Electron tube, composite tube, Noval, 9-pin, 100 mA at reichelt elektronik
UCH 81, Tube UCH81; Röhre UCH 81 ID373, Triode-Heptode | Radiomuseum.org
