Up for sale is an exceptional quad lot of 4 vintage CV1501 beam tetrode valves, beautifully preserved and brand new in their original factory/government-contract boxes. Manufactured by Valve Electronic in Great Britain, these highly specialized military-spec components are widely recognized for their robust internal shielding structure and excellent high-frequency stability.

As shown, each valve features a clean, clear glass envelope, internal structural support columns, and an early vintage cup getter. The glass envelopes carry sharp, authentic red military factory stamps clearly displaying the CV1501 specification code.

All 4 tubes come tucked inside their original cardboard packaging. The box faces carry clear historical contract stamps including VALVE ELECTRONIC, the CV 1501 designation, the military reference number A.M. Ref. No. 10CV/1501, and the iconic British Military Broad Arrow symbol. A rare, high-collectibility set preserved in immaculate New Old Stock (NOS) condition.