b409 tube nos nib PAIR matched Philips power tubes valve s amplifier RE134 L413
two tubes = pair matched tested 30mA ( good at 18mA) Funke tube tester
tube comes with Philips carton box Made in Holland
brown base , globe balloon glass shape
round logo on top, old production
strong emission , full power long life
vintage vacuum tube in great condition
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 98