EL86 = 6CW5

Equivalent 6CW5
Similar type  
With different Vf HL84 = 30CW5
LL86 = 10CW5
PL84 = 15CW5
UL86 = 45CW5
XL86 = 8CW5
CV number CV5094
Swedish Mil.nr.  
Tektronix part no 154-0202-00
Hewlett-Packard part no. 1923-0044