L63 6J5G 6J5 tube NOS Mullard Osram GEC MOV British preamp tubes 5 pieces strong
5 tubes = 5 pieces L63 tubes British made tested twice
test on tube tester TV7D/U = 92/90/9080/78 (reference good at 50)
reference 100% = 80
tested also on tube tester Funke W19S Ia (mA) = 17,5/17/16/14,5/14,5 (reference good at 10mA)
all tubes same stock branded KR marketing , with own vintage carton box
box 171