Vintage Telefunken / Valvo EF12 Stahlröhren Vacuum Tubes – Fully Tested & Certified Good

: A rare selection of authentic mid-century German "Stahlröhren" (steel envelope) vacuum tubes. These legendary 8-pin vintage tubes have been individually tested and verified on a calibrated tube tester. Each tube is labeled with its exact testing date and healthy milliampere (mA) readouts, certifying them as "GUT" (Good). Perfect for premium vintage radio restorations and classic audio equipment.

Telefunken / Valvo EF11, EF12 of UCH11  16 pieces