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(!!!!) (Best Pair) EL34 Mullard UK branded Mullard and Philips XF2 NOS "O" getter 1969 (87ma and 88.6ma) (close Gm)
(!!!!) (SINGLE) EL34 Mullard XF2 branded Bugle Boy double halo "O" used/good 1965 some heat stains on plate (70ma)