(!!!!) (Best Value XF2 Pair) EL34 Mullard XF2 NOS (1) double halo "O-O" (1) single halo "O" 1966 and 1970 (75ma and 78ma)
(!!!!) (Recommended Pair XF2) EL34 Mullard branded Telefunken XF2 single halo NOS 1968 (80.5ma and 83ma)
(!!!!) (Recommended XF2 Pair) EL34 Mullard XF2 NOS (1 tube) double halo "O-O" (1 tube) single halo "O" 1967-1968 (90.5ma and 92.8ma)
(!!!!) EL34 Mullard XF2 double halo "O-O" used/good 1963 a few heat stains on plate (72ma)
(!!!) (Best Value XF2) EL34 Mullard branded GE XF2 double halo "O-O" 1966 guide pin broke off (102.5ma)
(!!!) (Recommended Single) 6CA7 GE Big Bottle NOS rebranded GOLD-6CA7 National 1970's (91ma) (Highest Ma) (NOT A PAIR)
(!!!) 6CA7 Sylvania Big Bottle used/good 1970's (72ma)
(Good Value Pair) EL34 Mullard UK XF2 single halo used/good 1969-1972 (83.6ma and 85.6ma)
6CA7 Sylvania Big Bottle used/good 1970's no printing (73.6ma)
