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(!!!!!) (Best GZ34) GZ34 Teonex by Mullard UK fat brown base 1959 (58/40 and 58/40) (f31 series) (similar to metal base)
(!!!!!) (Best Single 1966) GZ34 Mullard Blackburn UK made for Knight NOS 1966 (58/40 and 58/40)
(!!!!!) (Best Single) GZ34 Mullard Blackburn UK branded RCA NOS 1967 (57/40 and 58/40)
(!!!!!) (Best Value 1961) GZ34 Mullard UK shield logo fat base 1961 low hours/like new (53/40 and 55/40) (f31 series)
(!) (READ REVIEW) CV1377=GZ34 Mullard Blackburn UK NOS 1976
