2 X ECC81 SIEMENS TUBE. 1960s PROD. USED. 85. CH165

2 X ECC81 TUBE. 1960s PRODUCTION. TESTED IN AMPLITREX AT1000 TUBE TESTER 78/106% EMISSION (EM) 73/94% TRANSCONDUCTANCE (GM) 0.2/0.6mA/V GAS.

eBay