Mullard KB/D CV4024 ECC81 12AT7 Halo Getter Valve NOS Boxed 642 R4D2 (V16)

642 R4D2 Code in the Glass. ECC81 12AT7 CV4024 Valve Tube. Mullard KB/D, British Made. Halo Getter, Grey Plates, Mottled Glass.

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