Description
6l6g tube Marconi Italy power tubes pair valve vintage 1950's amp 6l6g tube Marconi made in Italy power tubes pair valve for amplifier vintage 1950's 2 tubes 6l6g Marconi made in Italy tubes tested with tube tester Tv7 D/U = 40 & 40 (reference good at 25) both tubes with identical inner structure grey shield ceramic spacers insulator double pillar solid inner structure made to last long D getter bottom grey plate original vintage vacuum tubes power valve for amplifier last stage audio box 155