6HB5 Compactron Beam Tetrode. Designed to be used as a vertical deflection amplifier in a TV. MFR: Amperex, Lindel. SKU: 6HB5. New old stock. No longer available for export.
G.E ONE (1) 6HB5 Beam Pentode Compactron tNOS TESTED Vacuum Tubes Audio 1964-1968 | Reverb Italia
Compactron Tubes: A Junkbox Guide
NOS Sylvania 6HB5 Radio/Amplifier/TV Vacuum tube w/box | eBay
6HB5 Tube Lot (31 Pcs.) 16 GE + 8 Sylvania + 7 Zenith For Acoustat X Amplifiers | #248146760