b409 tube nos philips power tubes valve s amplifier RE134 L413 KL71401 KLANGFILM
tested 28mA ( good at 18mA) funke tube tester, with Philips carton box Made in Holland
brown base , globe balloon glass shape , round logo on top, old production , STRONG emission , vintage vacuum tube
old production early type
Rare
B409 = RE134 = P410 = E1 = LP4 = L414_Tungsram = L413 = L415_Tungsram = TB09 = L4180 = GRDIII
Great vintage vacuum tube as power output valve or driver stage for more powerful triode
box 93